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edges display bug on big geometries when looked up close
Closed, ResolvedPublic

Description

System Information
Operating system: Windows 10
Graphics card: Nvidia GForce 970

Blender Version
Broken:
2.80, hash: 18e5540a48b6, blender2.8, 2019-03-06 00:18, as found on the splash screen
Worked:

Short description of error
A loop cut on a big plane, when looked up close, doesn't show the actual edge and instead creates a weird gradient effect. Also, its position doesn't stay consistent when toggling between either edit and object mode, or between vertex-face-edge selection when in edit mode.
The gradient disappears whe orbitng around.
When there are more than one edge close to one another, their "gradients" sometimes seem to flip axis{F6773296}

For reference I added a cube, so standard edge behavior can be viewed alongside the wrong one.

The problem persists when scale transform is applied.

Exact steps for others to reproduce the error
Create a big plane (2564m in the example)
Set clipping to fit the scene size{F6773150}
Create a loop cut
Look closely to the cut.