if you enter The Fort (to get Rex a new brain for example) before finishing the "ring a ding ding" quest and getting involved in "the house always wins" quest to get you there, you will get stuck inside, mouse-over on the gate and it will show nothing.. so you cant leave the fort, talking to caesar to enter the secret lucky 38 bunker, you will not be able to start this first task for him, as you arent involved in "the house always wins", in turn making this game-breaking since you cant even fast travel out of there

good thing i always have 3 active saves and save occasionally on each of them or i would have been screwed

also, a tip for the developers: if a player has to hand over his weapons/gear for one reason or another, please put them in a crate, i hate seeing all those messages about what's getting back in my inventory afterwards, i have a LOT of crap on me it appears and takes around 5mins till the game stops reporting about all the crap i got back when leaving that area