During a repeat cycle of weight painting I noted this anomaly on the screen. I have no idea if I had anything to do with its creation, and no idea how to make it go away?? It is only on selected vertex groups. Some are just a few lines, vanishing off to the lower left, other times it is a large cluster of lines, also streaming off to the lower left of the screen, as in the example posted below.
Hello !
It’s not 100% clear, is it just a visual bug (eg : GPU / driver issue) or it’s actually the geometry that really goes away ?
Hi, that looks like unweighted vertices. It will be easier to assess if you post the file.