Bug with Dweller of the Deep quest + challenge

I completed it last night as the league started but it's not marked as completed in my challenges.

I'm trying to share pictures to show it but for some reason the forum won't let me upload a picture and posting a link doesn't show anything.

Same here, the only one that is not completed in that challenge. I have even tried to start a new one and went and did the Dweller of the deep again with no luck.

yeah, same here

Same for me. Quest completed and reward taken, but it's incomplete in the challenge. Only quest I need.

Same here

+1

https://www.pathofexile.com/forum/view-thread/3790073

Sometimes at league start, challenges have a wrong requirement. In this case, the trigger for the challenge being cleared is erroneously set to require "The Fetid Pool", instead of the appropriate "Dweller of the Deep".

If this bug gets fixed during the league, you should be able to use the /recheck_achievements chat command to mark if off if you haven't done The Fetid Pool before the fix.