in sPvP, Guess can be done in PvE as well.
As an Elementalist openly admitted in a 3v3 pvp match today to me, when he uses tornado form just before being downed, so last HP button click, his HP is increased due to tornado form, then using vapor form in downed state he automatically resses himself INSTANTLY!
Tornado form hp* 2 + vapor form +50% hp = over 100% downed Hp, thus automatically ressing.
This is both a design flaw as well as a exploitable issue, in a 5v5 match a bunker ele could keep outlasting with kiting and mist form for the Tornado to come off cooldown and upon insta-res get 50% to start with.

