Description of problem:
Notification about unsaved data is always displayed in Perspective Editor, Screen Editor, Editor Plugin and Splash Screen editor. It is displayed when no change was done and even right after plugin saving.

Version-Release number of selected component (if applicable):
6.1.0.ER6

How reproducible:
-

Steps to Reproduce:
1. Create one of the mentioned plugins.
2. Save plugin.
3. Try to close plugin.

Actual results:
"Are you sure you want to discard unsaved data?" allert is displayed.

Expected results:
Plugin is closed.

Additional info:
-