Sorting options are ghosted now

The ascend, descend and shuffle buttons are all ghosted. They do not work.

I have about 250 total documents in my Binder and recently did some mass hierarchy changes to them, Did I screw up the indexing or something??? Am I doing something really stupid?

Tried re-installing Scrivener. Nada, Had the files in OneDrive but moved them to desktop. Still nada.

Any ideas? Thanks!

(Using Scrivener 1.9.16.0 on Win 10 Pro)

addendum:

Tried sorting in a completely different project. Sort options are still ghosting.

(I’ve been using Scrivener for years and often sort things. Never had this problem.)