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I agree, that does seem really annoying. To avoid that, I usually play time controls with increment.

I think it is useful to check if a move is safe before making it.

I remember when I first started playing chess, someone captured my rook by "en passant."

Ok, thanks! @A-Cielbleu

I have 19.5 average centipawn loss in correspondence over 326 moves.

It happened to me once, but I reloaded page and pieces were okay.