not the actual door, but the side the door is in - if that makes sense
it comes away from the two long sides - not completely, but enough to worry me, though I still use it for Trigger, who is the lightest of my three
the pink one doesn't do it though, so maybe I was unlucky
I'd be inclined to buy from Amazon rather than EBay, as it's much easier to return stuff, and the price is the same - also lots of comments on there