Search function not working

Following September's Patch Tuesday, the search function (i.e. searching for content within a lister) in Directory Opus (Pro, 12.32) no longer works. No results are displayed.
Windows 11

Do you mean Windows Search (the small field, usually at the top right of the window) or Tools > Find Files?

Please show an example of what you're searching for, and something it should find but doesn't.

Did you check your index options? Maybe the Windows update broke the search index. Happens here on every greater update.