message: Prevent the preview line from collapsing when empty.
diff: @@ -118,7 +118,7 @@ class EditTabTitleWidget {
  <span class="expand"></span>
  <button v-on:click="$emit('close')" class="compact microtool danger"><i class="fa fa-times"></i></button>
  </div>
  - <div class="width-100pc" v-html="templateDiagnostic"></div>
  + <div class="width-100pc" v-html="templateDiagnostic + '&nbsp;'"></div>
  <et-contextmenu ref="insertFieldMenu">
  <div
  