Deactive 3d picking and highlighting of the picked 3D models (players, npc etc.) when the UI has been turned off (by ctrl shift h).
Motivation: Highlighting ruins the screenshots. In growded scenes, highlighting cannot be avoided.
Suggestion 2: One pixel margin to sides of the screen to prevent the picking of graphics. This would be useful when UI is not turned off; to avoid highlighting, I could move to pointer to bottom of the screen.
Note: the margin would only be for picking activitity, not to shrink the screen size or otherwise change the screen graphics.