When trying to go upstairs in the safehouse to access the second floor (where you can change your loadout, restock ammo, or use a vehicle), the character clips through the staircase and wall instead of walking up. This causes the player to fall through and end up outside the building, behind it.
The stairs should work normally to reach the second floor, but right now it’s impossible due to this collision issue.
I’ve attached a video to show the bug in action.