Add Shortcut to Files fails

This also happened to my wife in the past week or so, on two of her Microsoft accounts (one in the Microsoft 365 Family group, the other not part of the group).

This happens in both Edge and Firefox browsers, on two PCs, one running Windows 11 Pro, the other Windows 10 Pro.

She can share OneDrive folders to me and I can add them to my folders without this error. Her OneDrive "Share" menu in the browser looks different to mine. My guess is something on her Microsoft account or profile is different.

She has a possibly related OneDrive problem.

A few weeks back, she also started encountering the OneDrive problem where existing shared folders previously added to her "My files" were changed to internet shortcuts. 

What was previously a local folder on her PC has been removed from her PC and replaced with the shortcut which now opens the shared contents in a browser. This is useless to her because she needs to open and update the shared file in OneDrive, nott work with downloaded files, or the files from within the browser. She's running

I've had to try help quite a few other people have the same issue.

I've logged a ticket with Microsoft for this.

Please Microsoft, any advice?