Not sure if you guys got the same issue. Didn't find anyone mentioning this.

My Whatsapp notification is set to no vibration within the app. Never had issue all this while. Since updating to Lollipop, whenever I set my phone to 'Vibrate' mode, the phone vibrates for every single Whatsapp message, regardless if individual or group messages.

Before Lollipop, the Whatsapp notifications does not vibrate even when I am in Vibrate mode.

Anyone has a solution?

yeah agree. its downright annoying and I tried almost everything but the vibrating notification is persistent.

I guess we can only wait for the next update for this to be resolved.