Unable to view Match History on Web

I've run into this issue on every browser I've tested (Chrome, FireFox and Internet Explorer), all fully updated.

If I click on Match History under the menu from my username while on na.leagueoflegends.com I'm unable to see any matches in the history.

I've encountered the same issue when trying to view the matches on the web via the button in the League of Legends client.

I haven't been able to find any other reports of the issue so I don't know if it's isolated to my own account or a general issue.