Tab Group Sync - Not Working

I’m currently having an issue with the Tab Groups Sync feature. I recently migrated everything from Chrome over to Brave. I work from both my desktop PC at home and my laptop at work, both have sync turned on. My mobile is also included in this, but not relevant for this issue.

I keep all my tabs open under Tab Groups, and I have toggled Sync on for each of them. I have noticed that when I change content in each Tab Group on one computer, and then close the browser, when I open the other computer at another time, the tabs in the Tab Group do not update to reflect these changes.

Am I misunderstanding how this feature works? Is there an easy way to resolve this sync issue?