OS X Finder - Sync status icons disappeared

I can’t see the small icons that indicated the sync status any longer. Running on OS X 10.12.2

PROCESS to fix the problem when the green sync status icons in the Finder are missing in macOS or Mac OS X.

System Preferences > Extensions > All > Nextcloud > put a check next “Finder”


I got the same probleme here, with Mac OS Big Sur 11.2.3.
The Extension mark is set, but still no status icons show up.
Any Idea how to fix this?
Thanks in advance!

I have the same problem still with the newst client and 12.2.1. Any Solutions here?