would make an edge, sometimes, it won’t, I assume it’s not a bug, it’s my mesh somehow not quite right. this practice is on a simple plane shape of a big piece mesh.
visually I can’t tell what’s wrong with my mesh. All I know that one edge can’t be made at this point, the work around should be simple, by deleting the face, and build again, but I do like to find out why certain edge can’t be built, any ideas?