Syncthing Andoid synchronizes only after restart, on Marshmellow

My Syncthing runs with “Foreground service” turned on now.

I now changed the options back on standard…in the Android Setting i set Syncthing back to be “optimized battery” and in the Syncthing app i have turned the option “Keep the processor awake during synchronization” back to unchecked and it seems that Syncthing is still working!!!