[CLIENT] My masteries were replaced with another players talents

When I was queueing up for a random unranked match, I choose mid as my main, and support as my secondary. I got into a game, where my masteries were replaced with some other guys talents...

When clicking on these, it simply said:

"A suitable error message could not be found."

This has happend twice in a row. Will try restart afterwards

Game can be found here: http://matchhistory.euw.leagueoflegends.com/en/#match-details/EUW1/2594656753/31498563

[zombie-brand-mindblown]