Drag and drop from explorer not working (PT12.7 HD)

[mdb]

Coming from 10, I used this function regularly when importing audio files outside of the libary.
But it is not working in 12.7 Win10.

I've searched a lot and there seem 3 reasons:

1 - Disable UAC (user account control)
I did this already by putting the slider all down.

2 - Do NOT run as administrator
Tried this too but has no effect.

3 - It is a bug introduced in PT11.
Really? And is has not been fixed since?

Anyway, I hope this is a thing I can fix or I'm lost...
Importing with the 'Import audio' dialog is straight hell (why would one do that...)
Importing with workspace works better but requires navigating to the folder (again).