Destructible stacking issue

[DracoL1ch]

Whenever there's 2 destructible things with non-0 height on the same square (~64x64, wasn't tested), destroying any of them will clear the cell. That means second destructible become "transparent", providing no vision block whatsoever.

 

[Dr Super Good]

Possibly an engine bug with the occlusion height map. There probably is a reason the editor tries to prevent you from stacking them.