Game crash

When double screening, if you drag any UI element over the second screen, one crashes… it SEEMS to be the first (of the two) instances, but haven't tested to that level …
In my specific example, I like to keep the action windows below the main game screens… if they happen to touch AT ALL, or if one goes over the other game window whilst dragging a crash will occur.

Further testing - doesn't affect inventory type windows, so either combat only, or combat action window only issue