For around 10-15 of my Contacts, I have an avatar (image) set in their contact details. This is set in Outlook.com and in Gmail's contacts, too.
The images and any updates to my contacts show/work fine on iOS (26.4) on my iPhone 17 Pro Max.
However, on Tahoe 26.4 Contacts rearly update. Thus, changes to images or contact data on macOS rarely ever updates/syncs. And, it doesn't matter if I perform the update from iOS, Outlook.com, or from Gmail contacts. It is almost as the "sync" for Contacts isn't working.
In settings on macOS, I turned off Contacts, waiting a moment, and re-enabled it. That did not help.
Thoughts...
The images and any updates to my contacts show/work fine on iOS (26.4) on my iPhone 17 Pro Max.
However, on Tahoe 26.4 Contacts rearly update. Thus, changes to images or contact data on macOS rarely ever updates/syncs. And, it doesn't matter if I perform the update from iOS, Outlook.com, or from Gmail contacts. It is almost as the "sync" for Contacts isn't working.
In settings on macOS, I turned off Contacts, waiting a moment, and re-enabled it. That did not help.
Thoughts...