haptic feedback / vibration audible during calls

[Selene ToyKeeper]

If I press any of the call control buttons during a call, the phone vibrates. This vibration is audible to the person on the other end of the call. This means people can hear when I toggle mute/pause/speaker, which can be considered rude or at least distracting.

The dialer app seems to ignore audio for a while after each button press, but the mic starts working again before the vibration stops. Could we make the vibration shorter?

This was on a nexus 4 (mako), image 228 (observed on older images too).

[Selene ToyKeeper (toykeeper)]

Still happens on image 263.

This could make the phone unusable for people doing customer phone support or other jobs where it's important not to let the caller know you were muted.

[Selene ToyKeeper (toykeeper)]

Reproduced on utopic r2.

[Selene ToyKeeper (toykeeper)]

Still happens in Utopic 140, though it seems less severe than in older builds.

[Cris Dywan (kalikiana)]

If this is still a concern I gather a fix has to come from dialer/ usensord at this point. The vibrations are so subtle that, if they can still be heard, they'll have to be globally disabled during calls, but the UITK can't provide that.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.