ToME: the Tales of Maj'Eyal

Something odd started happening last night in Norgos Lair. While auto-exploring (and only auto-exploring) the game would "hang". Auto-explore is interrupted, but the game does not take any of my input. hitting z, arrow keys, talent hotkeys, etc. none of them are acknowledged.

I have to strike my "esc" key TWICE to fix it. Doing it once does nothing, doing it a second time a few seconds later will cause the menu to blip onto the screen very briefly (as if I hit esc back-to-back) and that fixes the problem (until it happens again).

No clear trigger on this, and I dont think I've noticed it outside norgos lair (could be a coincidence though)

I've seen this too just now.

Hitting escape or whatever was unnecessary for me, control returns after a few seconds for no apparent reason.

There's no special log message or anything, either. Just no input accepted for a couple of seconds.

Were you in Norgos??? Was it the "Ice" version?

No, for me it was in Farportal realms (because Infinite Farportal) and generic dungeon levels (because Infinite Dungeon).

EDIT: also twice so far in the Scintillating Caverns