I don't know what exactly caused this bug, so I will explain what happened step by step:
- I was level 6, have a spatula on Shyvana who is on the board
- midfight, I equip another spatula on the shyvana in order to get the +1 to champion size bonus.
- Next round: still says 6/6, tried everything in my power to change it, including removing shyvana from the board, putting her back in, didn't change.
- I deleted the shyvana, thus removing the item from the board, then my player count went down to 5/5 on LEVEL 6
Basically, removing the 2spatula item (forgot the name) from a champion on the board caused the maximum champion count to go down by 1, adding the item back then increased the max to 6 again, at level 6. (when it should've been 6/7 with the item)