Start menu search not working with StartAllBack on one Windows 11 PC

[Ben Coleman]

I've got StartAllBack installed on my 3 Windows 11 PCs (all paid for), and on one of them, start menu search (where you bring up the Start Menu and start typing, and it shows you what programs and other things match what you've typed) does not work.  I brink up the start menu, and start typing, and nothing happens.

If I turn off the Startallback start menu (by turning off the 'Use enhanced classic start menu' setting in StartAllBack's configuration) and revert to the standard Windows 11 Start menu, the start menu search functions work, and typing brings up the expected finds.  So this seems to be something StartAllBack is doing.  I've gone through everything in the StartAllBack configuration dialog, and I don't see anything related to turning on or off start menu search.  Have I missed something, or is this something else, and if so, any ideas what that might be?

Edited March 14 by Ben Coleman