CheckDirty is true after clicking a widget, but getData() returns the same

[Joel]

In Chrome33 and IE9, the checkDirty() method returns true after a widget drag handle has appeared, even though nothing has changed.

1. Open Developers console
2. Go to ​http://ckeditor.com/demo#widgets
3. Run CKEDITOR.instances.editor2.checkDirty(); in console
   

--> returns false

4. Run var d1 = CKEDITOR.instances.editor2.getData(); in console
5. Click on the apollo picture in the 2nd editor, but do not move it.
6. Run CKEDITOR.instances.editor2.checkDirty(); in console
   

--> returns true

7. Run var d2 = CKEDITOR.instances.editor2.getData(); in console
8. run d1 === d2 in console
   

--> returns true

I know this is a battle between getData() vs getSnapshot() vs _.previousValue, but as far as I can see, it is unexpected behaviour. Shouldn't checkDirty() work with getData() especially when there are widgets involved?

Switching to source mode and back does not help.

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Bonus: In Chrome CKEDITOR.instances.editor3.checkDirty(); is always true after page has loaded.