There is a extension that fixes league website white box match history glitch/bug.

This is the bug I am talking about: http://imgur.com/a/PmiVS

Google : League of Legends Match History Fix and download the extension. (I am not sure if I have to but, Credits to : distilledchaos for making this extension)

I use this extension my self and it works automatically most of the time. Sometimes when it doesn't work, you just open the extension and click League of Legends Match History Fix and it will fix it.

Chrome: https://chrome.google.com/webstore/detail/league-of-legends-match-h/mdgeabipdapmbcpdldplafegigjhpain?hl=en Firefox: https://addons.mozilla.org/En-us/firefox/addon/leaguematchfix/

I have seen multiple comments and threads over the years of people asking about this white box glitch. If you google match history white box bug, you see so many people complaining. Yet I only saw 1 comment which stated this extension works to fix this glitch/bug.

P.S. I have no idea on how the board system works, so I am not sure on how to wide spread this fix to all the people/threads complaining about this issue