[1.0.4] Rotting Titan stops interacting

[Doctornull]

I'm in the Rak'shor pride, first level, and I fought a Rotting Titan which shifted walls around.

At some point I think I killed it, but instead of dying, it turned non-interactive. Bumping into it doesn't trigger an attack -- its icon basically acts like a wall, but when I walk to where I can see it, it still stops auto-explore.

There's also a ghoul trapped in a similar state, but it can be interacted with by bumping into it from above or from the right (from left or below it acts like a wall). When bumping into the ghoul, I get a message about critting and killing the ghoul, but the crit explosion and death message happen one tile down and one tile left of the ghoul's icon.

What should I upload to help you guys debug?