Can't change color in ColorPicker when RichtextEditor opened as PopUpManager's pop-up

Steps to reproduce:
1.Create RichTextEditor based pop-up with PopUpManager
2.Select new color in ColorPicker

Actual Results:
New selected color just blinked in color swatch square button and then color reset to default;

Expected Results:
New selected color in color swatch square button

Workaround (if any):
1. Create some NewRichTextEditor, copy source of RichTextEditor to it.
2. In 'styleChanged' method replace
'if (!invalidateToolBarFlag)' on
'if (styleProp != "mouseShield" && styleProp != "mouseShieldChildren" && !invalidateToolBarFlag)'