I just played a battel with both poison harpies and quillboar with poison talent. After using both repeatedly in the quest battle and poisoning plenty of enemies, the quest tracker is at 0/1. I assume it should be at say 30/500. (Exact # not important.)
Same, poison isn’t counting, but hey, no surprise it is after all blizzard we’re talking 
Same. Not getting credit for poisoning enemies. Also not getting credit for playing deploy mini challenge. But getting credit for playing melee minis and winning with Beast leader challenges
Same here, poison does not register on the android version.
Same, the rest seem to be working. I even tried using Earth and Moon to see if it had to be from that. Nothing.
I was wrong, the 12 unbound minis is not registering either.
It seems the wrong counter is displayed. It should be displaying 0/500 for the first, 0/3000 for the second, and so on to track our progress. Instead, it displays 0/1 to tell us if the challenge was completed or not which doesn’t tell us how close we are to completing.
Also the “Play 12 siege minis in a single match” is not completing for me. Are the devs asking us to use minis with the Siege Damage trait? Or are they asking us to use minis with the Siege Specialist trait which I think only 2 minis have?
Update: So I actually just completed the siege task after playing an overtime match against Drakkisath. It seems you need to play 12 siege specialists in a single match.
The most reckless and untalent development team in the world strikes again.
It’s a bit hard to track when it only says 0/1. Does it work for pvp, heroics who knows.
same here 
but hey, I have a poison deck now 
Same here.
The unbound mission works in dungeons, but not in quests.
I’ve just tried doing this and was hoping the challenge was still being counted for. Sadly, I’ve poisoned well over 500 enemies and it’s not registering the kills.
Loaded my team up with poison to see if any worked. Don’t have Dryad yet, but 0/500 progress for Darkmoon in quests, sigils, heroic sigils, dungeons, and PvP with chimera, plague farmer, spiderlings, poison harpies, or earth and moon.
Guess I’ll be grinding out a sigil until it’s fixed. I’m newish and now I regret pushing to 90 with mostly level 12-14 minis. Stupid of me to try to play the game, right? Maybe if I drop cash I can get through a sigil with less struggle and help fund basic quality control for Blizzard.
Same issue for me unfortunately
Same issue here, not counting poisoned enemies at all.
Unfortunately same here, probably poisoned enemies 250x so far and no progress
Same here on S21 Ultra
I just reported the same bug. I’ve had this issue persist all day today. No credit despite using poison minis.
So I found a workaround for this bug.
It might be that the poisoning are counted only on chests, I don’t know.
What I did is grab a few poison units, go to heroic Baron Rivendare and poison the chest right in front. You don’t even have to beat the level. Just spend some time poisoning it, and quit about 1 minutes into the game, and the quests are finished.
This actually works, nice one. Gives you all 3 levels of the challenge too lmao.
Since the quests for 500, 3000, and 9000 poisonings are all counted the same (like, 12/1, 12/1, 12/1), I think it might be a counter error by the developers.