Incarnation of Dread bug

After dying while asked to bring the blue petal (for the 3rd time i think) to the incarnation of dread it got bugged, both blue and red petal spawn but neither work when i bring them to it, and no more petal spawn after that, i tried in diferent order too first blue and then red or red and then blue but doesnt work at all.

Bumping this as I can confirm this is still an issue. Bug reference number 458680491

This bug still occurs, it has not been fixed. Just softlocked in uber version of this fight.