I have same issue on my project.
The development build asks user permission for writing storage and save game feature works fine, but the shipping build doesn’t. Anyone who knows the reason and the solution?
(I checked AndroidManifest.xml in the Intermediate folder and there is the tag:
uses-permission android:name=“android.permission.WRITE_EXTERNAL_STORAGE”/
I also added “android.permission.WRITE_EXTERNAL_STORAGE” on the Extra Permission section in the Project Setting. But the issue was not solved.)