I completed a cave before unlocking the level and now the quest is always there

back before i unlocked the caves level requirement i went in and completed it including the first time rewards(i didnt think itd let me do the first time). now while trying to do the lootrun ive realized that the quest is still uncomplete and cant do it. is there a way to fix this? or am i stuck unable to 100% the quest now?

 

you have to open the blue and yellow chest at the end for the completion to count

 

I believe this is one of those caves they reworked recently... I also had this issue regarding it, though I had completed it correctly before. I assume you re-ran it and opened all the T3+ chests, but I think you may want to try again and make sure you opened all of them. So long as you do this it should mark as complete. I've done a number of caves before I was leveled for them, and after unlocking them (at lvl), they were already marked completed in my book. It's just this cave specifically that's a problem I think. Well this one and the other COTL one they reworked recently.

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In fact, I think I see your problem. The T3 chest in the screenshots is not the end chest for the Colossi Infection cave. You accidentally ran into a separate cave after entering. The end chest for Colossi Infection is down a separate path, and it's actually a T4.

EDIT: I did the exact same thing with this cave I think, which is why it was "broken" for me too.