Bug in Solo Chess

There's a bug when playing Solo Chess, in that game mode is possible to find positions in which you can eat the king, like that one:

But when you try to capture the king, instead of failing the puzzle the pieces bug like this

• If there is a King on the board, it must be the final piece

Good spotting, i see, it overlaps, and makes an "error" sound effect. The overlapping should be cancelled.

Yep. Known bug! But king must always be last.