I mean, with how the dungeons work, you'll just have the slime balls in your hotbar until you die. Since you don't get any items into and out of dungeons, you'll just have some random slime balls in your inventory. I just think it's useless, but Stef said it's not an issue, so I guess there's no problem with that anymore.
All I have noticed after today were crafting tables and slimes. You can still use crafting tables, and it's kind of annoying when I'm trying to shoot mobs and I accidentally right click the crafting tables instead. And mobs aren't supposed to drop anything unless it's a supply wave. The "Swarm" wave consists of slimes, and when you kill them, they drop slime balls, so I think that should be fixed.
The chat reaction thing hasn't been fixed yet, as you can still get the rewarded items while in the dungeons.
I think name tags would be a great way to help find the hidden mobs. But other than all of these things, everything runs pretty well.