Champ Trading Bug [Client]

I was just in an ARAM champ select screen (on OCE server, their bug report link redirect here), I had Nidalee and a teammate had Hecarim. We both clicked to trade with each other at the same time. The trade did not occur and my pending trade box stayed open, with no cancel option appearing. After a few seconds I could see the other player reroll, and I still had a pending trade for a champ no longer available. I could still type in chat, with other players responding, so I wasn't DC'd or anything. I informed my team of the bug, and that I was going to dodge, just in case.

It's just annoying to have to wait out the dodge penalty on something that was clearly a client issue. sigh