I have a long Word document which I use every day. I've
had the usual styles problems that uneducated Word users
have, but I think I've educated myself out of them.  
Except ...

When I opened the Styles and Formatting task pane, I used
to be able to right-click on a style and Select All
(first menu item) paragraphs formatted with that Style.  
Now, however, that first option is always grayed and
reads, "Select All: Not Currently Used," even when the
cursor is resting on a paragraph formatted with that
Style.

I've tried repairing Detect and Repair; no change.  I've
checked other Word documents and the Select All option is
always grayed.

Any ideas on how to restore this function?

Beth