Guild Wars 2

Today I started thief 1v1 at far and got my opponent (venom thief) into downstate, suddenly he rallied. Got him into downstate again and same thing happend again.
Needed to think a while what happend there. Both time he rallied, one of my teammates at mid died.
Later same thing happend to me where i randomly rallied altough i surely never hit the opponent that died, but i used basilisk venom close to an allie before.
Conclusion: venom share bugged?

If an enemy dies, and you tagged them ( remember the thief sharing the venom gets credit for condis shared by venoms, so I get you get credit for stuns on basi also) you would rally.

Sounds funky, but also working as intended..

I understand the mechanism but i cannot believe it is inteded that way.
If it is intended, I call it a bad mistake in gamedesign. It might be somehow usefull in open world content or stuff like this, but it is just plain stupid to get randomly rallied at pvp without touching any of the opponents dying, esp at the beginning of a match.