Bookmarks generic question

I installed the bookmarks app, and the floccus extension for Brave.
I want to sync all computers to the same bookmarks, same account and same user.

I setup the floccus extension on all 3 computers, all have windows 10, same browsers,same nextcloud account credentials and same floccuss settings.

One of the computers created it’s own folder on nextcloud called “Bookmarks Bar” and I don’t know why. .

There really should not be an extra folder like this. I guess I could remove the folder on nextcloud and remove the bookmarks and then re-sync or something.

I just wonder what could cause this while all browser,setting,accounts are the same.