In my AC-130 map (and I'm not advertising, it's an example), https://www.plazmaburst2.com/?s=9&a=&m= ... nie-baboom, the textures are offset from the hitboxes because your character is attached to a movable object. Now, this wouldn't be as big of a problem for me if this offset was consistent. The walls and background textures have all been offset, but not that of the decors. So I have to give them their own offset. Fix this by either offsetting all textures for walls, backgrounds, and decors, or removing all offsets (ideally this one). It's not that big of a problem for me, but it gets tedious because I have to put a decor down in the editor without offset, put it where I want it, and then give it the offset.
So I know this isn't a very common problem for many people, but still, do what you can.