Originally Posted by Rosskiller
Same problem here with 2.12.194. Before the update I had individual messages vibrate on and group message vibrate off. Now with every message in a group chat the phone vibrates. I already uninstalled and installed whatsapp, deleted cache, even downgraded to 2.12.193 where I didn't had this problem but now it's present!!! :S:S:S:S
For those people who end up in this thread because they experience this issue: I've found a solution.
Go to: Settings --> Notifications --> Notification Sound --> "Silent" AND
Settings --> Notifications --> Vibrate --> "Off"
Do this for single messages, or group messages, or both, whichever you need.
The problem is that if you set a sound (instead of silent) for these messages, but then set your phone
to silent/vibrate, it will try to play the sound when you receive a message, but the phone, not Whatsapp, will "convert" it to vibrate.