Since the "fix" I find myself getting stuck on guns too, notably front heavy guns on spire and goldfish. One moment I'm standing behind the gun, trying to spot enemies, the next I'm suddenly floating up onto the gun and it's very hard to get down (especially on spire as there is a wall in the way). I also sometimes fall through the guns inexplicably, especially on spire.
Bottom deck of junker, if I walk close to the side of the ramp sometimes I will start floating up and end up halfway through to the top deck stuck between them, though that one is a bit easier to jump out of (still loses valuable time).