I upgraded to 2.77 from 2.75 and I noticed that the knife tool has been adding edges automatically whenever I make n-gons, most of the time in places where I don’t want them. I end up having to delete these stray edges and faces and it slows down my modeling. Is this just a new setting or is this how it works now? Is there any way to get the knife tool to work like it did before?
Here’s an example. I made a simple cut and then scaled down the edge. Notice the stray triangle in the 2.77 version which is actually a piece of non-manifold geometry.