Weird, I explicitly remove arrow (and spear) trap functionality when bombed. This might be an edge case though, since there is no left/right tile removal next to the trap in this specific case. Need to investigate further. Thanks for the report!
if you need, i saved .VSF snapshot in WinVice 3.1 x64 before this event, i can send for testing etc.
Please do: paulko64 at gmail dot com