It remembers what you had played last time in other modes and keeps sticking to that skin.
Even if you change it in one game, it's back to the old one when you queue again.
For example on nautilus it keeps offering me warden nautilus because that's what i used in TB.
For lucian it keeps offering normal skin because that's what i used before NCS came
Is there something you really can't do without in the client? Is Udyr displaying as a Picasso painting again? This is the place to report bugs and give suggestions for League of Legends in general!
Don't spam your suggestions or bug reports here, and follow the [Universal Rules](http://boards.euw.leagueoflegends.com/en/c/announcements-en/3eWpXbJi). While not every suggestion here will be implemented, your favourites can be voted to the top for maximum visibility!