Vibration not working for starred contacts in do not disturb mode

I have the FP3 and would like to use the do not disturb setting with exceptions for starred contacts. When the starred contacts call, I would like the phone to vibrate. Unfortunately, selecting these settings does not lead to the desired result. Messages from starred contacts do lead to vibrating notifications, but calls remain silent. If I switch the sound setting to ringing while in do not disturb mode, then the exception works as expected. Has anyone else experienced this issue and found a solution?

Hi and welcome to the forum, so does then the vibration work too?

Thank you for your response. It does not vibrate while ringing in that case, even when it is set to do so.