On lincoln map, running around outside buildings resulted in out of bounds and inside buildings too, last time I played this map I didn't get out of bounds once.

Whatever has changed is annoying.

I haven't made any changes to the anti-camper mutator for quite some time.

I took a look at the map's pathing. There are only a few nodes behind the buildings, and several rooms of the hotel don't have any (the exception is the link gun room.) So as long as you're in the central area or in one of the other rooms, you shouldn't be triggering the out-of-bounds warning.

Barcona (or Barcelona) had an aclove near one end of the map under a dock. Ton said he was out of bounds when he made a base there.