Upgraded to Catalina 2 weeks ago and my Photos app hasn't sync'd with iCloud since then. iCloud.com photos look great, as do the iPhone and iPad libraries.
The Mac thought shows about 1/3 the correct number of photos and videos.
I have tried the following:
- Holding command and control and doing a repair of Photos
- Turning off iCloud Photo Library and turning it back on
- Turning off iCloud Photo Library, doing a repair, then turning it back on
Any other ideas?