you sure as hell have made alot of crap posts Drka
Anyway, you can get the same problem in cramped places such as jumping on tables in Taverns and most noticably jumping on the stairs behind the slave trader. I think it has somthing to do with sharp corners or getting stuck inside somthing else nearby. It might be just that you cant actually touch the floor due to you been trapped between two slopes. Iit will probably be fixed.