Red ghost overlay when moving out of BSP stack

[b4rlw]

I've been using the code detailed in #671 to dynamically move windows in and out of, or between stacks. However, occasionally when moving a window out of a stack, a red residual overlay is created when completing the operation, which can only be dismissed by undoing and redoing the move.

This can be reproduced fairly reliably by moving a window from the middle of a bsp stack to a new window.

It was also discussed peripherally in #1252, where another user confirmed experiencing the same thing.

Any idea what's going on here @koekeishiya? Cheers and best regards.

[kerryj89]

I experience the same but seem to trigger it when moving windows between displays, but I do use Stacks so maybe the root problem is there.