macOS desktop widgets flash while sharing screen on Zoom

When sharing my desktop over a Zoom meeting, the viewers see my desktop widgets flash, disappear and reappear. This happens consistently on static widgets (e.g. calendar date) and moving widgets (e.g. analog clock hands).

The behavior is the same on my Mac mini 2018 and Macbook Pro 14" - both are running Sonoma 14.0 OS.