just finished the collection, it's november 2022. been working on this achievement since the EoD expansion. only to discover today after catching my last fish that this title is bugged. stuck on 29/30.
all 30 collections have the green checkmark.
disappointed is an understatement. i've just wasted months of my time FISHING of all things. holy kitten
I submitted a bug report but based on the Support Team response above, I have little faith it will do anything at all.