iCloud tabs broken again in Safari

Looks like iCloud tabs are broken again across my devices in Safari. This service is extremely unreliable and seems to break randomly. I feel like this never happens on any Chromium browser or Firefox. I've tried the following unsuccessfully so far. Note that after each of these changes, I reboot my devices:

1. Deleted the ~/Library/Safari folder and started from scratch.
2. Disable Safari sync in iCloud settings on all my devices and reboot the device.
3. Log out and back into iCloud.

I have five devices: two laptops, one iMac, one iPhone, and one iPad. Yesterday, I tried re-enabling using just two devices: an M3 Pro MacBook Pro and my iPhone 16. Didn't work. Neither device showed any open tabs from the other device.

Has anyone found a real solution to this, or is this just something on Apple's back end that they need to fix?

Thanks in advance.

Rich