@yukinoh1989 Looking at it again.. it may have just appeared to be folded because of the way the object being retopologized was poking through.. but like Mark said.. a non planar quad.. It doesn’t have to be perfectly planar, but if a quad gets too far out of planer then it starts to look bent or folded, which is something you don’t want. I think in this case, the vertex with the pole was just too far forward on the Y axis and that was what was causing the bump.
