Reminder: adb install Needs -g To Auto-Grant Permissions

If your app has a targetSdkVersion of 23 or higher, and you are
installing the app via the command line, note that adb install
has two possible behaviors:

Used normally, the app is installed without any runtime permissions
granted. This mimics a normal app install, where you have to ask for
the permissions at runtime.

Use with the -g switch, the app is installed with all runtime
permissions pre-granted, as if the app had a targetSdkVersion
below 22. This can be handy for rapid testing, though it is not
indicative of what the user will see.

(a hat tip to William Ferguson for pointing this out to me!)