If “Vibrate on key press” under Settings -> Input -> Haptic Feedback/Vibration is enabled, then the “Vibration Strength” is ignored.
No matter if set at 100% (the default) or at 20%, whenever you touch a touch control on the touchpad overlay, the vibration stays alike.
Running 1.19.1. This has been true since several versions.
Before clicking on “Create topic” I searched the forum and found a post by myself in 2022 lol saying the same: Haptic feedback vibration strength on Android is ignored
thanks,