*sigh* Voted for it with my collegue. Seems like this was introduced by the newer bevel algorithm of Maya 2016, as it is reproduced in Maya 2016 without Extension 2. The old algorithm, forced with the following command, behaves correctly: polyBevel -com 1 -fraction 0.5 -offsetAsFraction 1 -autoFit 1 -segments 1 -worldSpace…
https://www.youtube.com/watch?v=8i8DbB2s0Yw#t=64 Can't be certain on a flat face, but that miter "patch" option at about 1:05 sure does look promising :)
+1 Claydough. Just set the default roundness value to 100 and use the Auto fit toggle to switch between the Solid and chamfer bevel profiles. Keep in mind that you can't have more than two segments using this technique for Solid Bevel.If you go over 2 segments you will have some bloby corners.