diff --git a/Dockerfile b/Dockerfile
index 29b541eb6..d7a27002c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,8 +21,6 @@ COPY . /app
 # Install npm libraries and run gulp to initialize the project.
 RUN npm install && gulp && rm -rf /root/.npm
 
-RUN ionic info
-
 # Provide a Healthcheck command for easier use in CI.
 HEALTHCHECK --interval=10s --timeout=3s --start-period=30s CMD curl -f http://localhost:8100 || exit 1
 
diff --git a/src/addon/mod/forum/pages/discussion/discussion.ts b/src/addon/mod/forum/pages/discussion/discussion.ts
index d145ca7f3..2d6b9af79 100644
--- a/src/addon/mod/forum/pages/discussion/discussion.ts
+++ b/src/addon/mod/forum/pages/discussion/discussion.ts
@@ -299,8 +299,6 @@ export class AddonModForumDiscussionPage implements OnDestroy {
                 const direction = this.sort == 'flat-newest' ? 'DESC' : 'ASC';
                 this.forumProvider.sortDiscussionPosts(posts, direction);
             }
-            this.defaultSubject = this.translate.instant('addon.mod_forum.re') + ' ' + this.discussion.subject;
-            this.replyData.subject = this.defaultSubject;
 
             // Now try to get the forum.
             return this.fetchForum().then((forum) => {
@@ -343,6 +341,10 @@ export class AddonModForumDiscussionPage implements OnDestroy {
                 this.forum = {};
                 this.accessInfo = {};
             }).then(() => {
+                this.defaultSubject = this.translate.instant('addon.mod_forum.re') + ' ' +
+                    (this.discussion ? this.discussion.subject : "");
+                this.replyData.subject = this.defaultSubject;
+
                 const startingPost = this.forumProvider.extractStartingPost(posts);
                 if (startingPost) {
                     // Update discussion data from first post.
diff --git a/src/components/ion-tabs/ion-tabs.scss b/src/components/ion-tabs/ion-tabs.scss
index 48c459042..fabba1828 100644
--- a/src/components/ion-tabs/ion-tabs.scss
+++ b/src/components/ion-tabs/ion-tabs.scss
@@ -37,6 +37,13 @@ ion-app.app-root core-ion-tabs {
             }
         }
 
+        .tabbar[hidden] + .tabcontent {
+            width: 100%;
+            core-ion-tab {
+                @include position(0, 0, 0, 0);
+            }
+        }
+
         .tabcontent {
             width: calc(100% - #{($core-sidetab-size)});
             position: absolute;