TFT: Area where you buy champions got stuck on "Sell this for 2g"

When the game started, I got a Braum with a recurve bow on it. I did the first round and went to sell it. After I sold it, the prompt that says "sell this for 2g" was stuck over where the champions were, so I was unable to buy any champions and there was no way that I found to get it off the screen, and as such had to reconnect. This lost me the game and cost me 28 LP in plat 1, taking me all the way down to 0.

I feel like this only happens when the client is being slow.