i found a few bugs in WoS ( 3.9.8 )
1. You can drive underwater (normal gravity etc)
2. You can get out of deathmatch (still in deathmatch world) *
3. There's a trick to stay on bike (not falling off) *
4. Invisible world after loading position while in bank.
5. (known long before) vehicle keeps dissapearing..
probably know a reason why:
The server has a lot of build-in cars, like all the houses one, some standard places like /cars..
and samp 0.3a can just take 2000 vehicles per server:
Version 0.3a
* Up to 500 players per server and up to 2000 vehicles.
http://forums.worldofstunt.com/wiki/Changelog
so if there are too many players with their own vehicle, the 2000 will be exceeded, and another players vehicle ID, will be over-writed by another player+location, so ur vehicle dissapears.
i told Jatochnietdan this already, and he said that it wasn't the reason becouse all the servers have unlimited vehicles..
i saw the 2000 vehicles max at the changelog ok wiki-samp and so i posted here again 
* Asking for premition to post how to do it
Ok...
1. That's a GTA:SA bug, not a SA-MP bug.
2. That's intended.
3. That's also intended.
4. You should not load from an interior
5. As explained, this is not the issue. As I've been tracking the server vehicles and there are less than even 1,000 vehicles, and the limit is
not 2000, as they are streamed by the SA-MP 0.3 server, it is technically unlimited.
So as I've told you already, this is not why the vehicles are disappearing. It says 2000 because that's what's been tested officially by the SA-MP Team in Grand Larency. Anyway as I've said this is all irrelevant, as the server has never even passed 1,000 vehicles yet.
Also vehicles can't be overwritten, it just doesn't happen. It has to do with script variables and not the SA-MP software.