Client freezing in champ select with accept/decline match overlay stuck

Lost first game of promo due to a client bug that prevents me from selecting/banning a champion. Have performed a repair and still have the issue. Am forced to close the client before I can do anything afterwards. Does anyone have a fix?

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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