The 'crash' just happened during normal gameplay, everything stopped, calendar is the only trigger I could imagine as I wasn't doing anything too fancy
Reloading just reloads it to that frozen, uninteractable state, no moment of working - baked into the savestate (but also no error message popup or closing the game- maybe that's just engine differences, wouldn't know)
*Might've been coincidentally fixed in the latest version? Don't seem to be having the issue persisting at a glance