Compatibility settings have been changed

I'm not sure what this is doing, it doesn't seem to affect anything and is purely an annoyance but every time i close league i get a windows message saying the compatibility settings for league of legends has been changed with an option to reopen league or just cancel.

I'm using windows 10 as that probably matters, though i don't know if anyone else has had this happen, I looked around and couldn't find anything on it so i decided to post on it here to see if any of the forum people might have any ideas on it.