Created attachment 152460 [details] Screenshot: How many screens are active? SUMMARY In kscreen screens can dragged and arranged in a way that they partially or fully overlap. In this case part or all of the screens, which are not selected, may be hidden by the selected screen. Please see screenshot. It'd be therefore useful, if the non-selected screens were drawn e.g. in a different color and their outline would be visible, even if covered by another screen. Please see the mockup.
Created attachment 152461 [details] Mockup: The red screen is fully covered by the selected blue screen
I think it would make more sense to prevent full overlaps. This isn't a logical physical screen configuration; nobody would position a small screen directly behind a large one such that the small one can't be seen.
*** Bug 470674 has been marked as a duplicate of this bug. ***