Flickering/visual glitches when many objects are selected

[RunDevelopment]

When I select many objects/map pieces, I noticed that flickering/visual glitches occur. I call it flickering because the type of visual glitch I see depend on the position and orientation of the camera.

In the following examples, I just moved the camera slightly:

[Philiquaz]

Mitigated with option to toggle selection outline renderer, but ideally we can resolve the renderer's fencing issues

[RunDevelopment]

I need the outline to see which objects I selected, so this mitigation is useless to me 😢