Incorrect card interaction
The issue happened when playing my last match on ranked Alchemy on PC. My opponent had many creatures on the battle field including a blood artist token, Lolth, Spider queen and Sanguine brushstroke.
I proceeded to kill one of his creatures with Brittle blast and hence all his creatures would be exiled instead of going to the graveyard (dying). All of his creatures and planeswalkers were marked accordingly with the purple text.
Next turn my opponent casts Meathook Massacre and wipes the board. As expected all his creatures go straight into exile HOWEVER blood artist still triggered causing me to lose the game. It is my understanding that none of those creatures, including the blood artist died since they never reached the graveyard and thus the ability shouldn't have triggered.
Logfile attached