alpha client bug report: find match and quit button inoperable

Events leading to problem: playing in LPQ. In champion select screen, one player on my team fails to select champion. I am ejected from champion select screen and returned to queue. When match is found, instead of clicking "accept" I click "reject". Following that, both find match and quit buttons do not work.

See video. http://sendvid.com/zbd7xagb

I am on windows 7.