Keywording, recently added words not showing in autocomplete list

Using most recent release 12.4 of LrC on a Windows 11 PC  I am adding keyword tags but now find that the recently added keyword does not appear in the autocomplete list and not in the Keyword suggestions table.  The keyword does appear in the keyword set 'Recent Keywords'  The keyword is also in the Keyword list.  Note that I possibly have over a thousand keywords and have to nest them otherwise I cannot scroll to the bottom.