I made a potion, but when I go to retrieve it, I tap the bottle and it spins, but it won’t let me collect it. And then after that, I can’t leave the potions screen. I have to shut the game down to get out.
I made this potion several days ago, but when I tried to collect it, the game told me that my potions vault was full so I had to wait until I had used a potion to try to collect it again and now it gets stuck every time. What do I do? Restarting the game gets me out of the potions room, but doesn’t fix the problem.

I have the exact same problem. There is room in the vault, but I am unable to collect the potions and I cannot brew any potions. Also, it gets stuck on that screen so I have restart the game to exit that screen.
I reported this bug but haven’t received any assistance to solve this issue. Any help would be greatly appreciated!
You have to use your potion when catching to make room for new potions. When doing fortress challenges use those too.