Detaching views in Analyze mode does not work correctly

Not sure if this is a bug , view decorations (for tabs) in analyze mode , shows and hides in very unintuitive way (I guess some stetting "show sub views decorations" would be a better solution)

1. Detach Timeline
2. Select Restore to Defualt layout
3. Switch to Statistics tab
4. Switch back to Time line tab
5. Try to scroll the time line
6. Whole time line scene ends with some strange offset and black frame around it.

1. Detach TimeLine Window
2. Start / Stop profiler
3. You can see two progress bars