[Client] Being traded before load breaks trading in lobby

Hi guys!

I just experienced this a match or 2 ago and it was weird. To start from the beginning a friend and I were in a lobby waiting for our ARAM queue to pop. When it popped he managed to connect faster than me and thereby see the champions everyone received before I did as well. I got Thresh, and he tried to trade me before I had even saw what I had been randomed. I heard the audio cue for trading but when I loaded into the lobby I didn't see what he was trading me, or the trade buttons for the other players. Confused, I explained what was going on and he canceled to trade to see if that would fix it. It did not. However I did receive the 'Player has canceled the trade' popup in the bottom right of the client. Another player tried to trade me and the same thing happened, I received the audio cue but did not see his trade window and still did not see the trade buttons for other players.

As for how to reproduce this, I guess just try to load in faster than a friend and have them trade you immediately. It didn't happen in the next ARAM we played so presumably that's what makes it occur since he did not instantly trade me the second game.

Has anyone else experienced this?