[CLIENT] Unable to trade champions in Champ select

In champ select when trying to trade champions with another player it wouldn't allow me to. The option popped up for me to trade and tried clicking the button once and a few times after but wouldn't do the trade. In this time the "X" button to cancel the trade also didn't work.

1. Try to trade between summoners 1 and 5 quickly as possible
2. Let the other person start the trade
3. Try to trade or click the "X" button
4. See after the game ends a few error messages

Not sure if this was just the EUW servers lagging at the wrong time but cost me a ranked game that would have been an easy game, guessing no chance of getting my provisional loss fixed even though Yasuo has not been played on my account more than 4 times.