Its when you are modifying or editing a rune page in champ select and the last person locks in their champion, AND IT RESETS WHAT YOU DID. Its absolutely infuritating to get almost done with setting up a runepage for a match then seeing it rest back to what it was because the last person locked in their champ before you saved the changes.
Don't forget your default rune page resetting to Resolve every single time you log in.
I posted this on another topic, but yeah we're investigating one this atm. We checked in some changes for 7.23 that reduced the frequency that this bug occurs but it looks like it didn't solve the problem in all cases. Sorry about this bug, I know it's annoying.
If you don't mind me asking some follow up Qs - is this happening for you all the time? Also are you playing on a Mac or a PC?
