[BUG]Tab Strip Rendering issue

The Tab Strip has couple of rendering issues:
1 Random graphic left overs in the background after you click any tab, see tab strip next to chart.
2 After running the mouse over the tabs little white stars appear on the corners, see RH example below.

Screenshot%20from%202019-02-28%2015-28-06 Screenshot%20from%202019-02-28%2015-26-56 Screenshot%20from%202019-02-28%2015-25-07

A post was merged into an existing topic: [BUG-12883] Repaints of tab strip