android - Sign in to Google Play Games Services choose account window is transparent -

i have implemented signing in games services android game app explained in here: https://developers.google.com/games/services/training/signin

everything works fine , there's no functional error. however, there displaying error. if not signed in , click sign in button, there 'connecting google play games services window' , there's dialog says 'choose account google play games'. , here's problem: dialog has transparent background can hardly see dialog itself. displays background correctly of times doesn't! problem known?

the dialog looks this: http://1.bp.blogspot.com/-0hat0iftbye/vktzcepnuwi/aaaaaaaacvg/ro6kgr_oqoi/s1600/chooseaccount2.png says 'choose account google play games' , has no white background.

i have googled couldn't find problem. can't it's me has problem.

hope can me.

thanks!

edit: found out issue on device. if of had problem , figure out how solve it, please let me know.

as have been discussed in comments, device issue- case of android fragmentation.