Can you fix the bug that messes up the default skin selection when trading/rerrolling??

Whenever I trade or rerroll I get a skin that I didn't play with last time. For my Karthus I always play Lightbane and I get Phantom or Statue. Tristana I always play dragon Trainer and I get Riot Girl?? And on and on. And most of the time I don't notice because I always had the skin I last used and I am stuck with a skin I didn't want. It is annoying. And it is not as important as not seeing the available trades icon, or many other major issues with the launcher, but it is still annoying. Thank you.