Actually, possibly related: I'm noticing that the game is failing to render destroyed terrain, but loading from a save file properly shows it.
1) Early in the level I used two detonation charges to destroy a wall with no effect, but after loading from save the wall is destroyed as expected.
2) In the turn 15 autosave the highlighted walls are shown as intact, but in the following turn autosave they are shown to be destroyed. I know that this is a rendering issue and not that the wall was later destroyed because if you load the turn 15 autosave, kill the cloaked alien, and then walk to the room with the generator(?) the unit will path through the wall.
This isn't necessarily related since selecting the detonator still crashes the game when things are properly rendered (AFAICT), but since it hints at corrupted state I figured it might be relevant.
auto_groundcombat_turn_16_start-52.json