I faced one issue in navigation bar. After Upgrading my phone in android 9 sometimes navigation bar is hang. As a solution i shut down my phone and on it.
I bought a Nokia 7 plus for my wife on black friday. She is experiencing this problem since day 1. At least one time a day the navigation bar freezes. Chatted with the Nokia helpdesk and they suggested to go into safe mode and see if the problem persists. It does, so no third party app is responsible. Nokia or Android need to fix this.
It looks like you're new here. If you want to get involved, click one of these buttons!