Question: since about 3 weeks Chessbase is playing crazy. If I draw a move (a legal capture move) that the piece in question can be captured, it is captured unconditionally. So I always have to take back this system-side move. This was not the case before. How can I solve this problem?
Answer: please start a board window and then menu File - Options - Engines. Deactivate the entry "Single click entry". This should fix the problem you describe.