Aidan Mosher
Comments
https://www.minecraftworldmap.com/worlds/Lss7M This should be the world download here. I had to use the /summon command to get the advancement, but no aquatic mobs exist whatsoever still.
I have never got a bucket of fish. I was going to go for the advancement, but cannot obtain it. So my answer is no, I have never been able to place a fish from a bucket or catch a fish in a bucket. Also this world was created about 3 days ago.
That is odd. It must be an issue on my end then. I will try to reinstall minecraft and see if that fixes it I guess? But I still would not call the issue resolved as when I swim through I try the /kill command on all aquatic mobs to test if anything even exists, and it says that no entities were found.