Unable to sync fork from feature branch of original repo

Hi,

I have created a fork "fork1" from my origiinal repo "topwave". Now if there is any commit happens on the master of topwave repo I could see the notification "You are 1 commit behind master" but whereas if there is any commit to feature branch "logger" in topwave repo i dont see similar notification.

Is this expected behaviour? Since we are creating fork for the entire repo any commit happens any branch should be notified in the fork isn't?

Thanks
Sathya