IE10 bracket Flexbox fix is incomplete
layout.css: In .bracket-item, -ms-box-pack: center should be: -ms-flex-pack:center
Sorry, I tried cloning tonight, but this is mercurial. Unfamiliar. Probably not going to install a bunch of stuff just to fork/pull this little change :)
This will let the rounds other than 1 line up correctly instead of floating to the top of their column. Attached screenshot shows one such .bracket-item fixed in the current live page.