Saving flow after changing Layout Editor

Don't know if this is a bug or feature request...
When using the layout editor, and saving changes, it is not always clear that a deployment is necessary, because the normal editor 'deploy' button remains un-highlighted, and 'the flows on the server have been updated' popup appears to time-out.

**Expected behaviour**
When changes have been made, it's fair to expect that the 'deploy' button, would indicate so.