https://bugs.winehq.org/show_bug.cgi?id=45273
--- Comment #35 from David dav75uk@yahoo.co.uk --- Yes there is a way to reproduce it. It's also possible on CBaseReader14:
Open a board, hold alt-left shift to draw a red arrow from g2 to g4 (drag to do that). Now pick up the pawn on g2, and drop somewhere illegal (i.e. not back at g2, g3 or g4). You'll notice the part of the arrow on the g2 square is now missing. In Chessbase11 this also affects the default to square (so two bits missing), that is if you click the piece, it moves to that square as a 'smart move'.
Quite possible the redraw sequence/priorities are a problem.
I can raise this as a new bug if you can't obviously see what it is causing it now (and if it's not related to the bugs fixed here).