Mastery Name Desync and Deleted Names

This happened to me twice so far. Sometimes in the dynamic queue the names for masteries desync, and show the wrong names correspending to certain masteries. Also, it sometimes shows mastery pages that you have already deleted. In addition to the desynced names in my attached photo, you will see "Mumu", although I deleted that page. I deleted "Ashe Support" but it shows there as well. The screenshot shows "Leona/Naut Yolo" being named as "Mumu" in case it is not obvious. RITO PLEASE.