Champion Mastery Bug - Tristana

I have level 5 mastery with Tristana (~26k points), which would make her be in my top 8 highest champion mastery page on my summoner profile. However, she is not there at all, and my lowest champion mastery in that group is only level 3, so she should be in there somewhere. I emailed and reported the bug, and was told to post about it here!

Anyone else have this issue? It's very small, but annoying to say the least.