When I created a note on the web, it was reflected on Windows in a few seconds.
New tagging on the Web version was also reflected on the Windows version within a few seconds.
I'm facing the same problem.
When I search by tags, I get only incomplete results.
From the web browser version, the results are displayed correctly.
10.6.9-win-ddl-public (2254)
Editor: v116.1.14913
Service: v1.26.7
On Windows 10 (20H2), 19042.746