TFT Bug

Ok, so.. when the Carousel comes and I choose one champ who I already have 2 2 stars and 2 1 stars, it auto upgrades to 3 stars and I lose the item that I would've got on him if he didn't upgrade.

That's very annoying, it happened 2 times in 1 game and I single handedly wasn't in top 2 bc of that. I understand that it's still PBE and that it has a lot of bugs, so I'm just contributing to the work of getting rid of those pesky bugs!