Louisdi, I contacted Motorola (not because I neeed to, but to give you peace of mind on this matter) and they said that mine IS formatted as Internal Storage. One clue that it was successful is as I had said, if you tap on the 3 dots after clicking to make it internal it then gives you the option to make it portable again, thats a clue its now internal. They said as I did that if you look at the storage amount it should show them added together but it will still appear to be separate though it is not. The way the files are written, if you move your apps to the SD card and try to move them to another device, they will not work if you have formatted it as internal. Yes you can remove the SD card with them on, but if you move them to another devie they will not work properly.
As mine looks as I showed above IS correct and IS internal storage. I think now this is just getting repetitive.
The Idea of adoptable or internal storage is to create more room for more apps, this is what it does. And that is what we wanted and what we have so it is working for us and is formatted as internal. No argument can change what is, it is as it is supposed to be. All I can tell you is for your famly member and/or friends, let them know if they click to format it as internal, it will still show 2 storages. And any apps they download thereafter will go onto the SD Card not the main storage. But they can go into them and click change and move it to the main phone if they want to.
If you go to YOUTUBE you can probably find a ton of tutorials on this, they will all show the same as my pictures above.
I do know that as I move things to the SD Card internal storage, that my shared storage gets smaller as well and I am able to move some of the system apps there but opted to not and put them back directly onto the phone.
Here’s a few Youtube Links for you: