--- a/src_js/iconolab-bundle/src/components/editor/CommentList.vue	Tue Jun 05 13:56:20 2018 +0200
+++ b/src_js/iconolab-bundle/src/components/editor/CommentList.vue	Wed Jun 06 16:21:54 2018 +0200
@@ -4,6 +4,7 @@
         <comment
             v-for="comment in comments"
             v-bind:id="comment.id"
+            v-bind:key="'comment-' + comment.id"
             v-bind:level="comment.level"
             v-bind:comment="comment.comment"
             v-bind:username="comment.user_name"