1. Well, it's fun to experience GTA:SA with other people online. But as we are the Quality Assurance team, we are used to some exact bugs. There used t obe some bugs which made the gameplay unpleasant, but they were fixed as soon as possible.
2. After a bug is reported, you can be sure it's looked into. There's only few cases where the devs need reminding about the bugs left.
3. If, in rare occasions, like corrupted file, the game messes up, we just request for a new build. It's fixed in no time.
The developers are working really hard on the mod and we as testers won't give them much peace if we find something that is not fixed instantly. You wouldn't believe how fast they fix the bugs for us to test again.