diff --git a/src/addon/mod/scorm/components/index/addon-mod-scorm-index.html b/src/addon/mod/scorm/components/index/addon-mod-scorm-index.html
index c96072bb2..7f6dcdbc8 100644
--- a/src/addon/mod/scorm/components/index/addon-mod-scorm-index.html
+++ b/src/addon/mod/scorm/components/index/addon-mod-scorm-index.html
@@ -23,7 +23,7 @@
 
     <div *ngIf="scorm && loaded && !scorm.warningMessage">
         <!-- Attempts status. -->
-        <ion-card *ngIf="scorm.displayattemptstatus || Object.keys(scorm.offlineAttempts).length">
+        <ion-card *ngIf="scorm.displayattemptstatus || (scorm.offlineAttempts && scorm.offlineAttempts.length)">
             <ion-card-header text-wrap>
                 <h2>{{ 'addon.mod_scorm.attempts' | translate }}</h2>
             </ion-card-header>
diff --git a/src/core/course/formats/singleactivity/providers/handler.ts b/src/core/course/formats/singleactivity/providers/handler.ts
index 977ada030..8a4a3d776 100644
--- a/src/core/course/formats/singleactivity/providers/handler.ts
+++ b/src/core/course/formats/singleactivity/providers/handler.ts
@@ -113,4 +113,15 @@ export class CoreCourseFormatSingleActivityHandler implements CoreCourseFormatHa
     getCourseFormatComponent(injector: Injector, course: any): any | Promise<any> {
         return CoreCourseFormatSingleActivityComponent;
     }
+
+    /**
+     * Whether the view should be refreshed when completion changes. If your course format doesn't display
+     * activity completion then you should return false.
+     *
+     * @param {any} course The course.
+     * @return {boolean|Promise<boolean>} Whether course view should be refreshed when an activity completion changes.
+     */
+    shouldRefreshWhenCompletionChanges(course: any): boolean | Promise<boolean> {
+        return false;
+    }
 }
diff --git a/src/core/course/pages/section/section.ts b/src/core/course/pages/section/section.ts
index 020741e74..ba066057f 100644
--- a/src/core/course/pages/section/section.ts
+++ b/src/core/course/pages/section/section.ts
@@ -80,9 +80,14 @@ export class CoreCourseSectionPage implements OnDestroy {
         this.displayEnableDownload = courseFormatDelegate.displayEnableDownload(this.course);
         this.downloadCourseEnabled = !this.coursesProvider.isDownloadCourseDisabledInSite();
 
-        this.completionObserver = eventsProvider.on(CoreEventsProvider.COMPLETION_MODULE_VIEWED, (data) => {
-            if (data && data.courseId == this.course.id) {
-                this.refreshAfterCompletionChange();
+        // Check if the course format requires the view to be refreshed when completion changes.
+        courseFormatDelegate.shouldRefreshWhenCompletionChanges(this.course).then((shouldRefresh) => {
+            if (shouldRefresh) {
+                this.completionObserver = eventsProvider.on(CoreEventsProvider.COMPLETION_MODULE_VIEWED, (data) => {
+                    if (data && data.courseId == this.course.id) {
+                        this.refreshAfterCompletionChange();
+                    }
+                });
             }
         });
 
diff --git a/src/core/course/providers/default-format.ts b/src/core/course/providers/default-format.ts
index f83dd2057..45bcfe551 100644
--- a/src/core/course/providers/default-format.ts
+++ b/src/core/course/providers/default-format.ts
@@ -157,4 +157,15 @@ export class CoreCourseFormatDefaultHandler implements CoreCourseFormatHandler {
     openCourse(navCtrl: NavController, course: any): Promise<any> {
         return navCtrl.push('CoreCourseSectionPage', { course: course });
     }
+
+    /**
+     * Whether the view should be refreshed when completion changes. If your course format doesn't display
+     * activity completion then you should return false.
+     *
+     * @param {any} course The course.
+     * @return {boolean|Promise<boolean>} Whether course view should be refreshed when an activity completion changes.
+     */
+    shouldRefreshWhenCompletionChanges(course: any): boolean | Promise<boolean> {
+        return true;
+    }
 }
diff --git a/src/core/course/providers/format-delegate.ts b/src/core/course/providers/format-delegate.ts
index 218a9bfdf..4a2b476c4 100644
--- a/src/core/course/providers/format-delegate.ts
+++ b/src/core/course/providers/format-delegate.ts
@@ -158,6 +158,15 @@ export interface CoreCourseFormatHandler extends CoreDelegateHandler {
      * @return {Promise<any>} Promise resolved when the data is invalidated.
      */
     invalidateData?(course: any, sections: any[]): Promise<any>;
+
+    /**
+     * Whether the view should be refreshed when completion changes. If your course format doesn't display
+     * activity completion then you should return false.
+     *
+     * @param {any} course The course.
+     * @return {boolean|Promise<boolean>} Whether course view should be refreshed when an activity completion changes.
+     */
+    shouldRefreshWhenCompletionChanges?(course: any): boolean | Promise<boolean>;
 }
 
 /**
@@ -337,4 +346,15 @@ export class CoreCourseFormatDelegate extends CoreDelegate {
     openCourse(navCtrl: NavController, course: any): Promise<any> {
         return this.executeFunctionOnEnabled(course.format, 'openCourse', [navCtrl, course]);
     }
+
+    /**
+     * Whether the view should be refreshed when completion changes. If your course format doesn't display
+     * activity completion then you should return false.
+     *
+     * @param {any} course The course.
+     * @return {Promise<boolean>} Whether course view should be refreshed when an activity completion changes.
+     */
+    shouldRefreshWhenCompletionChanges(course: any): Promise<boolean> {
+        return Promise.resolve(this.executeFunctionOnEnabled(course.format, 'shouldRefreshWhenCompletionChanges', [course]));
+    }
 }
diff --git a/src/core/question/classes/base-question-component.ts b/src/core/question/classes/base-question-component.ts
index 49642e774..f0ab76a35 100644
--- a/src/core/question/classes/base-question-component.ts
+++ b/src/core/question/classes/base-question-component.ts
@@ -297,6 +297,8 @@ export class CoreQuestionBaseComponent {
                 this.question.input.correctClass = 'core-question-correct';
             } else if (input.classList.contains('partiallycorrect')) {
                 this.question.input.correctClass = 'core-question-partiallycorrect';
+            } else {
+                this.question.input.correctClass = '';
             }
         }