Did you ever figure out a solution to this? I'm on windows 11 and have same issue with offline files being the only ones I can access. when I log in on other machines everything is there. Any tips?
I found a work around but it's not a great one... more like discovering a glitch in the matrix, if you will.
On Windows 11, while connected/online, open the 'Control Panel' and select 'Windows Tools'.
Doing so will open a new and special 'File Explorer' window; different than the normal Windows 11 'File Explorer' window.
For some reason, the 'File Explorer' window that opens when you select 'Windows Tools' appears to be the 'File Explorer' from Windows 10.
From this window, naviagate to the drive where you have files set to be available offline and you'll notice that the 'Easy Access' drop-down menu is again present.
From the 'Easy Access' drop-down, you'll find the toggle to 'Work Online'.
I'll try to post some screenshots to show what I am talking about when I next have a few moments.
Stand-by.