Merge branch 'issue_14643' into 'master'

Fix background when editing a highlighted note

Fixes #14643 

See merge request !3423

app/assets/stylesheets/pages/note_form.scss

@@ -71,8 +71,6 @@
 }
 
 .note-form-actions {
-  background: #fff;
-
   .note-form-option {
     margin-top: 8px;
     margin-left: 30px;