Rune Edit Page Bug - Champ Select

Occasionally when I get into champ select and I try to change my runes, it will pull up a window with the "X" button showing in the top right but otherwise, it's blank and I can't edit my runes. There is a window open because I can't select my champion without closing the window but I can't edit my runes. If I close and reopen the client it usually fixes the issue, but it's been happening more and more recently and going into ranked games without edited runes is not very conducive towards winning.