Adoptable storage and apps updates move back the app in the internal storage

I have Android 6.0 non-rooted and installed my sdcard as internal storage (adoptable storage). I can move a lot of apps to the sdcard but as soon as these apps gets updated, the app move back to the internal storage. I thought that adoptable storage was there to say to android to use the sdcard by default!

I have searched the web and found a few blogs that explain how to tell Android that the sdcard as the default location but the command cannot be executed on my MotoG3 for security reason.

Code:

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adb shell pm set-install-location 2

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and i get

Code:

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Error: java.lang.SecurityException: Package android does not belong to 2000

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is there any other trick so the apps that are on the sdcard stay there for good?

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