When it wakes up from sleep..

Hello,

A month ago I purchased 2013 MBA 13 and I am experiencing something weird.

I typically have Chrome, Calendar, Activity monitor, and Finder window opened, and switch back and forth.

While I am on Chrome, if I close the screen and let it go to sleep, a few minutes later when I open it back up, Finder window is on top of Chrome window, even though the last app I was using is Chrome browser.

I have os 10.8.5 on mba and I have never seen this on my 2009 iMac.

Can somebody explain why this is happening and how to stop it from happening?

Thank you

well, just grabbed it to check for any helpful answers, and it didn't happen.

maybe it is somehow randomly happening, which doesn't make sense