There is a weird small visual glitch happening with the navmesh agents. Not sure what is the problem, but I can replicate the issue with a playground. Take a look at this:
What is wrong with this, you might ask? Well, it is a subtle jagged movement that happens from time to time. In the following picture I try to illustrate what I mean:
Sometimes when you click a point (T as Target in the picture) and the cube starts moving, it kind of switches position a bit to previous one, I think. I think this is showing now, since the camera is locked to the target cube and all the small “nudges” are really visible. It is even more visible when you have a fully fledged animated character in your scene instead of the cube
Any idea what might cause this?