[android-developers] Bizarre OpenGL ES rendering artifact on Nexus 7 with Android 4.3

I got a big problem with a game of mine and the latest version of Android. Semi-transparent pixels rendered on the OpenGL ES surface let the underlying activity shine through as following screen shot shows.

This problem only appears in a new "AppGratis" promoted version of the game I just released this morning and here is the really bizarre thing: ONLY the APK downloaded from Google Play has this problem. When I install the same APK that is locally stored on my computer via adb I do not have this problem.
I re-installed the Google Play version multiple times and the rendering artifact is always reproducible.

It looks like Google Play alters the APK or maybe it is incorrectly installed on the device. However, I do not even know what may trigger that "shine through" effect. Any help (especially from Google) appreciated.

--
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
---
You received this message because you are subscribed to the Google Groups "Android Developers" group.
To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.