That works now if you offset a NURBS srf so I’m hoping it would also work with subd. There’s isn’t a prototype of this to test yet but I added your comment to the report. Thanks.
This would be support for all the render mesh modifiers… I filed it as https://mcneel.myjetbrains.com/youtrack/issue/RH-54111
I’m not seeing that here, is it a panel redraw issue, does toggling to another panel and back restore them? Can you try some other objects too to see if it’s specific to a particular object?