It was something we were tipped about earlier but we noticed it now. It works if you are in Fast Ring and have installed the latest Store update.
So, as you can see in the screenshot above, the store app now offers option of selecting System drive to install a new app, if your default app storage is set as SD card. The app in question WhatsApp Beta is provisioned by the dev to be install-able only on internal storage.
So, this helps in getting rid of error messages which many of us encounter when re-installing apps after a reset of the device.
Thanks to our readers for sending us this tip.
