Check the "Sounds and Vibration" section in phone app settings. Its there..
can't find it. I refer to the good old function, flipping the phone 180° degree to mute the sounds and vibrations triggered by an event aka call.
also I really appreciate the new expanded screenshot option, as it was a much used feature for me in OOS.
Also it is a bit buggy.
attached screenshot will show the problem and the options available to me in sounds and vibration.
added: beside this bug, the long Screenshot works well.
Hate to be a fan boy, but I wish Syberiaos would also be available for the 3t. Most needed things out of the box, pre-configuration good.