Cannot Select A Trial Champion [Game Breaking]

NA Server, Client Bug

Details: After completing the "Spend 250,000 Gold In Game" quest, I got the choice between Morgana, Brand, and Ziggs. Usually, you'd be able to check their abilities and choose one to play. However, I cannot choose them, as when I try to mouse over the select or the view abilities buttons, the options disappears. Not only that, but I cannot continue because it's required that you choose one.

(Please watch the video to see what I mean)

This happens every time I launch League. I've restarted my computer and client to no avail.

EDIT: I've tried redownloading the client, and that didn't work, either.

EDIT2: I ended up figuring out a way to fix it.

1.Start League.

2.Open Task Manager

3.In the Apps, click the drop down arrow on League

4.End the 2nd task in the drop down.

League should restart and you can select the option. (hopefully)