Hi, in 20240311 with pixel 6a I have encountered this bug:
randomly every 2 days the haptic feedback and vibration in general stop to work. The toggle "haptic feedback" is still on; after switch it on and off nothing happens.
Reboot the phone is the only way to reinstate the vibrations functionalities.
haptic feedback randomly crashes
5 months later
This seem to be a long living Pixel 6a bug.
It also seems that it started happening more often recently,
there is a github issue about it: https://github.com/GrapheneOS/os-issue-tracker/issues/2414