File Manager on Web is not working on Firefox 86

🍱 Features & apps files-accesscontrol
1

I recently lost the view of the File manager in Firefox 86. It works fine in MS Edge 88.0.705.81

2

I do have the same failure with Firefox 88.0.1.
It looks like all files are deleted, but it works perfect with MSEdge and Iphone.
So, the files are still there but invisible.
What can I do?