[Client] Weird Freezes

It's happened to me only once, but I've never had it before now, otherwise I wouldn't have thought anything of it. It may be just a one time occurence, but I'll report this anyways

I logged in normally, and entered a Rift 5v5 queue, the match started fine, and we all called our roles. All was well, aside from one player being totally unresponsive. Regardless, I called adc anyways, picked Jinx, and proceeded to communicate with our lost partner. Except I couldn't. Each time I clicked the chatbox below, the client froze until I moved my mouse around. It's fair enough to say that my keystrokes were going through, however it was futile. The queue failed due to the unresponsive player and I was sent back to the wait queue again. This time, the lag persisted, and made it hard to tell what was going on. I canceled, and restarted the client with no major issue. I tried to replicate the bug, but to no avail.

I would assume this happens regardless of queue, and may not even have anything to do with the update. It could have just been a hiccup or something. If it's possible to replicate, I would try the following.

-Load a Queue of any kind -Type in chat -Select a champion -Type in chat again -Click around a bit

If that doesn't do it, then it's probably just a slight hiccup.