William,
I am running in Classic Experience as I am using an add-on called “O365 Ultimate Forms” from InfoWise Solutions as it gives us some additional form control, business logic and workflows
for the application that we are using the site for. Changing to “New Experience” takes away some of the features that the users need such as ability to click directly on the “Edit Properties” icon and to see “Review Progress” bar and expand and collapse the
associated tasks with the item (as seen in the screenshot below)

As you can see from this screenshot (end user view), we are only displaying the “Name (linked to document)” field and want the user (who has read-only access) to click
on the document, have it open in either Word or Excel and be able to print or update the document and “Save As” to a new file location (either file share or different SharePoint site or library).

The “More” option does not show anything and displaying the ribbon has “Download a Copy” greyed
out

If I switch it to “New Experience” then it opens in Word or Excel desktop rather than the Online
versions, but as I mentioned this is not what is required as it would mess up the end user experience.
This is one library, Forms, of several in this site (SOP – standard operating procedures, Policies, Forms,
Quality Manual) and the other libraries are working as intended.
If I am in “Classic Experience” and right mouse click on the document name, this is what I get

Thanks,
Scott