Are (map) testers reliable?

[Razzation]

I've heard various rumors recently that ever since a certain gmod update, map testers are no longer reliable. I wish for a mod or higher to confirm whether they are or not to put this issue to rest. ^.^ I need to know. ;-;

[2bias]

Brassx fixed them, however, i recommend you do not add one to your map if you are indeed making one.

Personally, I think they are a quite stupid game play mechanic, and we already have the portable traitor tester, so I see no need for one in a map.