Merge branch 'revert-9e1936a4' into 'master'

Revert "Merge branch 'revert-bab8bb06' into 'master'"

See merge request arsnova/frag.jetzt!455

src/app/components/shared/comment-answer/comment-answer.component.html

@@ -17,6 +17,7 @@
         <mat-tab label="{{'comment-page.your-answer' | translate}}">
           <mat-form-field class="input-block">
             <textarea [(ngModel)]="answer" (input)="edit = true"
+                      (keyup)="$event.cancelBubble=true"
                       matInput
                       matTextareaAutosize
                       matAutosizeMinRows="3"