diff --git a/src/addons/calendar/services/calendar-helper.ts b/src/addons/calendar/services/calendar-helper.ts
index 593637898..80d70451f 100644
--- a/src/addons/calendar/services/calendar-helper.ts
+++ b/src/addons/calendar/services/calendar-helper.ts
@@ -546,12 +546,12 @@ export class AddonCalendarHelperProvider {
         const site = await CoreSites.getSite(siteId);
         const fetchTimestarts: number[] = [];
         const invalidateTimestarts: number[] = [];
-        const promises: Promise<unknown>[] = [];
+        let promises: Promise<unknown>[] = [];
 
         // Always fetch upcoming events.
         promises.push(AddonCalendar.getUpcomingEvents(undefined, undefined, true, site.id));
 
-        promises.concat(events.map(async (eventData) => {
+        promises = promises.concat(events.map(async (eventData) => {
 
             if (eventData.repeated <= 1) {
                 // Not repeated.
diff --git a/src/addons/messages/services/messages.ts b/src/addons/messages/services/messages.ts
index 5fd53a9c6..dd2ae0076 100644
--- a/src/addons/messages/services/messages.ts
+++ b/src/addons/messages/services/messages.ts
@@ -31,6 +31,7 @@ import { CoreWSExternalWarning } from '@services/ws';
 import { makeSingleton } from '@singletons';
 import { CoreError } from '@classes/errors/error';
 import { AddonMessagesSyncEvents, AddonMessagesSyncProvider } from './messages-sync';
+import { CoreWSError } from '@classes/errors/wserror';
 
 const ROOT_CACHE_KEY = 'mmaMessages:';
 
@@ -191,7 +192,14 @@ export class AddonMessagesProvider {
                 requesteduserid: userId,
             };
 
-            await site.write('core_message_create_contact_request', params);
+            const result = await site.write<AddonMessagesCreateContactRequestWSResponse>(
+                'core_message_create_contact_request',
+                params,
+            );
+
+            if (result.warnings?.length) {
+                throw new CoreWSError(result.warnings[0]);
+            }
         }
 
         await this.invalidateAllMemberInfo(userId, site).finally(() => {
@@ -3483,6 +3491,19 @@ type AddonMessagesConfirmContactRequestWSParams = {
  */
 type AddonMessagesCreateContactRequestWSParams = AddonMessagesConfirmContactRequestWSParams;
 
+/**
+ * Data returned by core_message_create_contact_request WS.
+ */
+export type AddonMessagesCreateContactRequestWSResponse = {
+    request?: {
+        id: number; // Message id.
+        userid: number; // User from id.
+        requesteduserid: number; // User to id.
+        timecreated: number; // Time created.
+    }; // Request record.
+    warnings?: CoreWSExternalWarning[];
+};
+
 /**
  * Params of core_message_decline_contact_request WS.
  */
diff --git a/src/addons/mod/forum/services/handlers/prefetch.ts b/src/addons/mod/forum/services/handlers/prefetch.ts
index a9c55d2e9..79e1bf33b 100644
--- a/src/addons/mod/forum/services/handlers/prefetch.ts
+++ b/src/addons/mod/forum/services/handlers/prefetch.ts
@@ -48,13 +48,13 @@ export class AddonModForumPrefetchHandlerService extends CoreCourseActivityPrefe
         try {
             const forum = await AddonModForum.getForum(courseId, module.id);
 
-            const files = this.getIntroFilesFromInstance(module, forum);
+            let files = this.getIntroFilesFromInstance(module, forum);
 
             // Get posts.
             const posts = await this.getPostsForPrefetch(forum, { cmId: module.id });
 
             // Add posts attachments and embedded files.
-            files.concat(this.getPostsFiles(posts));
+            files = files.concat(this.getPostsFiles(posts));
 
             return files;
         } catch (error) {
diff --git a/src/addons/mod/glossary/components/index/index.ts b/src/addons/mod/glossary/components/index/index.ts
index 03be8f63b..d79b755ea 100644
--- a/src/addons/mod/glossary/components/index/index.ts
+++ b/src/addons/mod/glossary/components/index/index.ts
@@ -573,7 +573,6 @@ class AddonModGlossaryEntriesManager extends CorePageItemsListManager<EntryItem>
      */
     setOnlineEntries(onlineEntries: AddonModGlossaryEntry[], hasMoreItems: boolean = false): void {
         this.setItems((<EntryItem[]> this.offlineEntries).concat(onlineEntries), hasMoreItems);
-        this.onlineEntries.concat(onlineEntries);
     }
 
     /**
@@ -583,7 +582,6 @@ class AddonModGlossaryEntriesManager extends CorePageItemsListManager<EntryItem>
      */
     setOfflineEntries(offlineEntries: AddonModGlossaryOfflineEntry[]): void {
         this.setItems((<EntryItem[]> offlineEntries).concat(this.onlineEntries), this.hasMoreItems);
-        this.offlineEntries = offlineEntries;
     }
 
     /**
diff --git a/src/addons/notes/components/add/add-modal.html b/src/addons/notes/components/add/add-modal.html
index c3fe269d6..843df9053 100644
--- a/src/addons/notes/components/add/add-modal.html
+++ b/src/addons/notes/components/add/add-modal.html
@@ -19,11 +19,10 @@
             </ion-select>
         </ion-item>
         <ion-item>
-            <ion-label>
-                <ion-textarea placeholder="{{ 'addon.notes.note' | translate }}" rows="5" [(ngModel)]="text" name="text"
-                    required="required">
-                </ion-textarea>
-            </ion-label>
+            <ion-label></ion-label>
+            <ion-textarea placeholder="{{ 'addon.notes.note' | translate }}" rows="5" [(ngModel)]="text" name="text"
+                required="required">
+            </ion-textarea>
         </ion-item>
         <div class="ion-padding">
             <ion-button expand="block" type="submit" [disabled]="processing || text.length < 2">
diff --git a/src/addons/notes/services/notes-sync.ts b/src/addons/notes/services/notes-sync.ts
index 2df96b2ce..a9dfac04d 100644
--- a/src/addons/notes/services/notes-sync.ts
+++ b/src/addons/notes/services/notes-sync.ts
@@ -62,12 +62,10 @@ export class AddonNotesSyncProvider extends CoreSyncBaseProvider<AddonNotesSyncR
         ]);
 
         // Get all the courses to be synced.
-        const courseIds: number[] = [];
+        let courseIds: number[] = [];
         notesArray.forEach((notes: (AddonNotesDeletedDBRecord | AddonNotesDBRecord)[]) => {
-            const courseIds = notes.map((note) => note.courseid);
-
-            courseIds.concat(courseIds);
-        }, []);
+            courseIds = courseIds.concat(notes.map((note) => note.courseid));
+        });
 
         CoreUtils.uniqueArray(courseIds);
 
diff --git a/src/addons/notifications/notifications.module.ts b/src/addons/notifications/notifications.module.ts
index c81f9813b..86595e7c3 100644
--- a/src/addons/notifications/notifications.module.ts
+++ b/src/addons/notifications/notifications.module.ts
@@ -64,6 +64,8 @@ const preferencesRoutes: Routes = [
                 CoreCronDelegate.register(AddonNotificationsCronHandler.instance);
                 CorePushNotificationsDelegate.registerClickHandler(AddonNotificationsPushClickHandler.instance);
                 CoreSettingsDelegate.registerHandler(AddonNotificationsSettingsHandler.instance);
+
+                AddonNotificationsMainMenuHandler.initialize();
             },
         },
     ],
diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index bc4d2881f..7457bda23 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -132,16 +132,21 @@ export class AppComponent implements OnInit, AfterViewInit {
 
         // Check InAppBrowser closed.
         CoreEvents.on(CoreEvents.IAB_EXIT, () => {
-            CoreLoginHelper.setWaitingForBrowser(false);
             this.lastInAppUrl = '';
-            CoreLoginHelper.checkLogout();
+
+            if (CoreLoginHelper.isWaitingForBrowser()) {
+                CoreLoginHelper.setWaitingForBrowser(false);
+                CoreLoginHelper.checkLogout();
+            }
         });
 
         Platform.resume.subscribe(() => {
             // Wait a second before setting it to false since in iOS there could be some frozen WS calls.
             setTimeout(() => {
-                CoreLoginHelper.setWaitingForBrowser(false);
-                CoreLoginHelper.checkLogout();
+                if (CoreLoginHelper.isWaitingForBrowser()) {
+                    CoreLoginHelper.setWaitingForBrowser(false);
+                    CoreLoginHelper.checkLogout();
+                }
             }, 1000);
         });
 
diff --git a/src/core/classes/tabs.ts b/src/core/classes/tabs.ts
index 92f76b076..7182606c4 100644
--- a/src/core/classes/tabs.ts
+++ b/src/core/classes/tabs.ts
@@ -247,7 +247,7 @@ export class CoreTabsBaseComponent<T extends CoreTabBase> implements OnInit, Aft
 
         await this.calculateMaxSlides();
 
-        this.updateSlides();
+        await this.updateSlides();
     }
 
     /**
@@ -378,9 +378,14 @@ export class CoreTabsBaseComponent<T extends CoreTabBase> implements OnInit, Aft
         }
 
         this.maxSlides = 3;
-        const width = this.slidesSwiper.width;
+        let width = this.slidesSwiper.width;
         if (!width) {
-            return;
+            this.slidesSwiper.updateSize();
+            width = this.slidesSwiper.width;
+
+            if (!width) {
+                return;
+            }
         }
 
         const zoomLevel = await CoreSettingsHelper.getZoom();
@@ -619,7 +624,7 @@ export class CoreTabsBaseComponent<T extends CoreTabBase> implements OnInit, Aft
     protected windowResized(): void {
         setTimeout(() => {
             this.calculateSlides();
-        });
+        }, 200);
     }
 
     /**
diff --git a/src/core/components/tabs-outlet/core-tabs-outlet.html b/src/core/components/tabs-outlet/core-tabs-outlet.html
index 0c5ce4ea6..74747fbe7 100644
--- a/src/core/components/tabs-outlet/core-tabs-outlet.html
+++ b/src/core/components/tabs-outlet/core-tabs-outlet.html
@@ -11,7 +11,6 @@
                     <ng-container *ngFor="let tab of tabs">
                         <ion-slide
                             role="presentation"
-                            [hidden]="!hideUntil"
                             [id]="tab.id! + '-tab'"
                             class="tab-slide"
                             tabindex="-1"
diff --git a/src/core/directives/format-text.ts b/src/core/directives/format-text.ts
index f67985298..16ee00021 100644
--- a/src/core/directives/format-text.ts
+++ b/src/core/directives/format-text.ts
@@ -23,6 +23,7 @@ import {
     Optional,
     ViewContainerRef,
 } from '@angular/core';
+import { DomSanitizer } from '@angular/platform-browser';
 import { IonContent } from '@ionic/angular';
 
 import { CoreEventLoadingChangedData, CoreEventObserver, CoreEvents } from '@singletons/events';
@@ -90,6 +91,7 @@ export class CoreFormatTextDirective implements OnChanges {
         element: ElementRef,
         @Optional() protected content: IonContent,
         protected viewContainerRef: ViewContainerRef,
+        protected sanitizer: DomSanitizer,
     ) {
 
         this.element = element.nativeElement;
@@ -504,7 +506,7 @@ export class CoreFormatTextDirective implements OnChanges {
         // Important: We need to look for links first because in 'img' we add new links without core-link.
         anchors.forEach((anchor) => {
             // Angular 2 doesn't let adding directives dynamically. Create the CoreLinkDirective manually.
-            const linkDir = new CoreLinkDirective(new ElementRef(anchor), this.content);
+            const linkDir = new CoreLinkDirective(new ElementRef(anchor), this.content, this.sanitizer);
             linkDir.capture = this.captureLinks ?? true;
             linkDir.inApp = this.openLinksInApp;
             linkDir.ngOnInit();
diff --git a/src/core/directives/link.ts b/src/core/directives/link.ts
index 49d296352..94aae1bf7 100644
--- a/src/core/directives/link.ts
+++ b/src/core/directives/link.ts
@@ -12,7 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { Directive, Input, OnInit, ElementRef, Optional } from '@angular/core';
+import { Directive, Input, OnInit, ElementRef, Optional, SecurityContext } from '@angular/core';
+import { DomSanitizer, SafeUrl } from '@angular/platform-browser';
 import { IonContent } from '@ionic/angular';
 
 import { CoreFileHelper } from '@services/file-helper';
@@ -33,7 +34,7 @@ import { CoreCustomURLSchemes } from '@services/urlschemes';
 })
 export class CoreLinkDirective implements OnInit {
 
-    @Input() href?: string; // Link URL.
+    @Input() href?: string | SafeUrl; // Link URL.
     @Input() capture?: boolean | string; // If the link needs to be captured by the app.
     @Input() inApp?: boolean | string; // True to open in embedded browser, false to open in system browser.
     /* Whether the link should be opened with auto-login. Accepts the following values:
@@ -47,6 +48,7 @@ export class CoreLinkDirective implements OnInit {
     constructor(
         element: ElementRef,
         @Optional() protected content: IonContent,
+        protected sanitizer: DomSanitizer,
     ) {
         this.element = element.nativeElement;
     }
@@ -91,7 +93,13 @@ export class CoreLinkDirective implements OnInit {
             return; // Link already treated, stop.
         }
 
-        let href = this.href || this.element.getAttribute('href') || this.element.getAttribute('xlink:href');
+        let href: string | null = null;
+        if (this.href) {
+            // Convert the URL back to string if needed.
+            href = typeof this.href === 'string' ? this.href : this.sanitizer.sanitize(SecurityContext.URL, this.href);
+        }
+
+        href = href || this.element.getAttribute('href') || this.element.getAttribute('xlink:href');
 
         if (!href || CoreUrlUtils.getUrlScheme(href) == 'javascript') {
             return;
diff --git a/src/core/features/mainmenu/mainmenu-tab-routing.module.ts b/src/core/features/mainmenu/mainmenu-tab-routing.module.ts
index 3a4c0ddb0..ca9c0538c 100644
--- a/src/core/features/mainmenu/mainmenu-tab-routing.module.ts
+++ b/src/core/features/mainmenu/mainmenu-tab-routing.module.ts
@@ -24,7 +24,7 @@ export function buildTabMainRoutes(injector: Injector, mainRoute: Route): Routes
 
     mainRoute.path = mainRoute.path || '';
     mainRoute.children = mainRoute.children || [];
-    mainRoute.children.concat(routes.children);
+    mainRoute.children = mainRoute.children.concat(routes.children);
 
     return [
         mainRoute,
diff --git a/src/core/features/sharedfiles/components/list-modal/list-modal.html b/src/core/features/sharedfiles/components/list-modal/list-modal.html
index f022309dd..602b672ac 100644
--- a/src/core/features/sharedfiles/components/list-modal/list-modal.html
+++ b/src/core/features/sharedfiles/components/list-modal/list-modal.html
@@ -14,6 +14,7 @@
 </ion-header>
 <ion-content>
     <core-shared-files-list [siteId]="siteId" [mimetypes]="mimetypes" [isModal]="true" [manage]="manage" [pick]="pick"
-        [path]="path" [showSitePicker]="showSitePicker" (onPathChanged)="calculateTitle($event)" (onFilePicked)="filePicked($event)">
+        [path]="path" [showSitePicker]="!hideSitePicker" (onPathChanged)="calculateTitle($event)"
+        (onFilePicked)="filePicked($event)">
     </core-shared-files-list>
 </ion-content>
diff --git a/src/core/features/sharedfiles/components/list-modal/list-modal.ts b/src/core/features/sharedfiles/components/list-modal/list-modal.ts
index f3ba2f873..9a38a9c75 100644
--- a/src/core/features/sharedfiles/components/list-modal/list-modal.ts
+++ b/src/core/features/sharedfiles/components/list-modal/list-modal.ts
@@ -32,7 +32,7 @@ export class CoreSharedFilesListModalComponent implements OnInit {
     @Input() manage?: boolean;
     @Input() pick?: boolean; // To pick a file you MUST use a modal.
     @Input() path?: string;
-    @Input() showSitePicker?: boolean;
+    @Input() hideSitePicker?: boolean;
 
     title?: string;
 
diff --git a/src/core/features/tag/components/list/list.ts b/src/core/features/tag/components/list/list.ts
index 286d8916c..561db82bf 100644
--- a/src/core/features/tag/components/list/list.ts
+++ b/src/core/features/tag/components/list/list.ts
@@ -40,7 +40,7 @@ export class CoreTagListComponent {
             fromContextId: tag.taginstancecontextid,
         };
 
-        CoreNavigator.navigateToSitePath('/tag/index', { params, preferCurrentTab: false });
+        CoreNavigator.navigateToSitePath('/tag/index', { params });
     }
 
 }
diff --git a/src/core/features/user/pages/about/about.html b/src/core/features/user/pages/about/about.html
index 463fc451d..41072034b 100644
--- a/src/core/features/user/pages/about/about.html
+++ b/src/core/features/user/pages/about/about.html
@@ -38,21 +38,21 @@
                         </a></p>
                     </ion-label>
                 </ion-item>
-                <ion-item class="ion-text-wrap" *ngIf="user.address">
+                <ion-item class="ion-text-wrap" *ngIf="formattedAddress">
                     <ion-label>
                         <h2>{{ 'core.user.address' | translate}}</h2>
                         <p><a class="core-anchor" [href]="encodedAddress" core-link auto-login="no">
-                            {{ user.address }}
+                            {{ formattedAddress }}
                         </a></p>
                     </ion-label>
                 </ion-item>
-                <ion-item class="ion-text-wrap" *ngIf="user.city && !user.address">
+                <ion-item class="ion-text-wrap" *ngIf="user.city && !formattedAddress">
                     <ion-label>
                         <h2>{{ 'core.user.city' | translate}}</h2>
                         <p>{{ user.city }}</p>
                     </ion-label>
                 </ion-item>
-                <ion-item class="ion-text-wrap" *ngIf="user.country && !user.address">
+                <ion-item class="ion-text-wrap" *ngIf="user.country && !formattedAddress">
                     <ion-label>
                         <h2>{{ 'core.user.country' | translate}}</h2>
                         <p>{{ user.country }}</p>
diff --git a/src/core/features/user/pages/about/about.page.ts b/src/core/features/user/pages/about/about.page.ts
index 1999862e4..2c3e5808f 100644
--- a/src/core/features/user/pages/about/about.page.ts
+++ b/src/core/features/user/pages/about/about.page.ts
@@ -75,7 +75,7 @@ export class CoreUserAboutPage implements OnInit {
 
             if (user.address) {
                 this.formattedAddress = CoreUserHelper.formatAddress(user.address, user.city, user.country);
-                this.encodedAddress = CoreTextUtils.buildAddressURL(user.address);
+                this.encodedAddress = CoreTextUtils.buildAddressURL(this.formattedAddress);
             }
 
             this.hasContact = !!(user.email || user.phone1 || user.phone2 || user.city || user.country || user.address);