kok wrote:How is it considered an exploit if SH loses control of the pet once someone tap it.
Technically speaking an exploit is using a game bug to your advantage. Pets not following los is a bug. Engi's, WL's, maguses, and SH are all abusing it right now, because there is really no way not to without dropping your pet and gimping yourself. It is less of an issue for everyone else since they have immobile / melee pets. With SH it is really only the spike, and maybe the gas squig that are causing headaches.
The thing to keep in mind is that this is an alpha. There are a lot of bugs, and the dev's do what they can to fix them quick.
Npc LoS is an annoying but relatively minor exploit, compared with other things. It doesn't have a huge impact like a lot of the gold exploits / renown exploits do on the overall server population.