Cannot leave beta on Google Play Store

It is not possible to choose 1.9.5.0 from the version so I'll choose 1.8.1 instead

But this is also part of the bug of 1.8.1

 

 

I've already left the beta on my Android phone but each time I try to download Minecraft, it just pass the "download" part and go straight to the "install" part. It's like the apk of 1.9.5.0 Beta is "locked" on my phone and Play Store will check for that file first before downloading the 1.8.0 apk

Furthermore, when I run the 1.9.5 beta app, it told me that it can not verify the lincense of the game, although it was installed by an apk from Play Store