If you alt-tab out while in game then re-open many of the items just appear as large blank or black boxes on the scoreboard
If you keep doing it eventually the game takes a very long time to open back up
I'm also full screen mode just in case that matters.
Post your PBE bug reports here: something not functioning as intended? Store is broken? A champion's ability is not working? etc
Need help? Read our [bug reporting guide](http://community.pbe.leagueoflegends.com/c/bugs/CF5EEDC8FF5AC1A896F517E2C7AE4650C472807F-how-to-report-bugs-on-the-pbe).
Comments about things you don't like or suggestions for improvements go in Feature Feedback.