Fairphone 3 vibrates while ringing although disabled

• /e/ version: 2.3-t-stable
• Device model(s): Fairphone 3
• Developer mode enabled: yes
• Device rooted: no
• Trackers blocker enabled: no

Summary

Fairphone 3 vibrates while ringing although vibration is disabled

The problem

Steps to reproduce

Disable vibration while ringing in phone app settings and call from a different phone
What is the current behavior?

Besides ringing the phone vibrates
What is the expected correct behavior?

No vibration

Technical informations

Relevant logs (adb logcat)

Relevant screenshots

Solutions

Workaround

Possible fixes