diff --git a/src/app/components/shared/comment-list/comment-list.component.html b/src/app/components/shared/comment-list/comment-list.component.html
index 6ba72d10bab4702a7b12fbc9fa786c5c5462bb8f..ec2c3b39112c2dacf243d4b1ca33d491697f065a 100644
--- a/src/app/components/shared/comment-list/comment-list.component.html
+++ b/src/app/components/shared/comment-list/comment-list.component.html
@@ -32,17 +32,17 @@
   </div>
 
   <mat-menu #sortMenu="matMenu" xPosition="before">
-      <button mat-icon-button (focus)="hideCommentsList=false" matTooltip="{{ 'comment-list.vote-desc' | translate }}"
+      <button mat-icon-button matTooltip="{{ 'comment-list.vote-desc' | translate }}"
               (click)="sortComments(votedesc)">
         <mat-icon [ngClass]="{votedesc: 'up'}[currentSort]">keyboard_arrow_up</mat-icon>
       </button>
 
-      <button mat-icon-button (focus)="hideCommentsList=false" matTooltip="{{ 'comment-list.vote-asc' | translate }}"
+      <button mat-icon-button matTooltip="{{ 'comment-list.vote-asc' | translate }}"
               (click)="sortComments(voteasc)">
         <mat-icon [ngClass]="{voteasc: 'down'}[currentSort]">keyboard_arrow_down</mat-icon>
       </button>
 
-      <button mat-icon-button (focus)="hideCommentsList=false" matTooltip="{{ 'comment-list.time' | translate }}"
+      <button mat-icon-button matTooltip="{{ 'comment-list.time' | translate }}"
               (click)="sortComments(time)">
         <mat-icon [ngClass]="{time: 'unread-icon'}[currentSort]">access_time</mat-icon>
       </button>
diff --git a/src/app/components/shared/comment-list/comment-list.component.ts b/src/app/components/shared/comment-list/comment-list.component.ts
index 75409636d6b500c41cbbaaaccd9aadda67da4100..07d8d80547f74e764f75374b73f5fe6798eae502 100644
--- a/src/app/components/shared/comment-list/comment-list.component.ts
+++ b/src/app/components/shared/comment-list/comment-list.component.ts
@@ -95,8 +95,6 @@ export class CommentListComponent implements OnInit {
     if (this.searchInput && this.searchInput.length > 2) {
       this.hideCommentsList = true;
       this.filteredComments = this.comments.filter(c => c.body.toLowerCase().includes(this.searchInput.toLowerCase()));
-    } else {
-      this.hideCommentsList = false;
     }
   }
 
@@ -171,8 +169,8 @@ export class CommentListComponent implements OnInit {
         }
         break;
     }
-    this.sortComments(this.currentSort);
     this.filterComments(this.currentFilter);
+    this.sortComments(this.currentSort);
     this.searchComments();
   }
 
@@ -214,10 +212,11 @@ export class CommentListComponent implements OnInit {
           return !c.read;
       }
     });
+    this.sortComments(this.currentSort);
   }
 
-  sortComments(type: string): void {
-    this.comments.sort((a, b) => {
+  sort(array: any[], type: string): void {
+    array.sort((a, b) => {
       if (type === this.voteasc) {
         return a.score - b.score;
       } else if (type === this.votedesc) {
@@ -228,6 +227,14 @@ export class CommentListComponent implements OnInit {
         return +dateB - +dateA;
       }
     });
+  }
+
+  sortComments(type: string): void {
+    if (this.hideCommentsList === true) {
+      this.sort(this.filteredComments, type);
+    } else {
+      this.sort(this.comments, type);
+    }
     this.currentSort = type;
   }
 }
diff --git a/src/app/components/shared/comment/comment.component.scss b/src/app/components/shared/comment/comment.component.scss
index d927f8b8c07e3c8b4c27ad506cff014a777ea926..fa3cfd026c35b256279d80e41848439e83e4ddbf 100644
--- a/src/app/components/shared/comment/comment.component.scss
+++ b/src/app/components/shared/comment/comment.component.scss
@@ -2,7 +2,7 @@
   margin-bottom: 3%;
   background-color: var(--surface);
   padding: 1.5% 1.5% 3% 3%;
-  transition: background-color 1s linear;
+  transition: background-color 0.5s linear;
 }
 
 mat-card-content > :first-child {
diff --git a/src/app/components/shared/comment/comment.component.ts b/src/app/components/shared/comment/comment.component.ts
index 1fa3e0d5d93817cb97fbf88ed7fd4801fc0a99f0..1404cd4433ad3e2089c9bb6d4ca8032d2914e544 100644
--- a/src/app/components/shared/comment/comment.component.ts
+++ b/src/app/components/shared/comment/comment.component.ts
@@ -143,7 +143,9 @@ export class CommentComponent implements OnInit {
     this.goToFullScreen(document.documentElement);
     if (this.isStudent === false) {
       this.wsCommentService.highlight(comment);
-      this.setRead(comment);
+      if (!comment.read) {
+        this.setRead(comment);
+      }
     }
     const dialogRef = this.dialog.open(PresentCommentComponent, {
       position: {