As the thread title says, going into your Pocket Dimension removes any progress you might have had on a Monster Zoo. 148 enemies left, but when you come back, it's no longer classified as a monster zoo, and you get no item for completing it. Or what I assume is completing it. It's not crippling, and to an extent I actually like it ("Running away, are we? No reward for you!"), but I still think it should either be fixed, or telegraph in some way, perhaps by giving that very message when portaling.
Found this one out while I was trying to clear up inventory space while hunting *THAT ONE LAST FREAKING WISP* Always teleporting through walls while I'm mopping up.
