Reply To: Wiggly lines in the 3D-Viewport
@philip79 This is not necessarily a bug. I believe its a display anomaly that occurs when the zbuffer has to work with extreme ranges and loses precision because of that.
For the practical solution to this, it occurs when you are working with extreme sizes and/or work with extreme clipping ranges in the camera. Both are interlinked (you can’t have a really large models and not have to adjust your clipping range).
I would check the size of your model, its probably really large. Try scaling it down by 0.01 (or even more), frame it with . (numpad) and see what happens.
I could recreate this “bug” (its not) by simply scaling up a cube that intersected a plane:
