Glitches along borders of Nightly ribbon
As pointed out here there are currently glitches along the edges of the nightly ribbon in some cases:
This is likely because the shapes overlap exactly, which sometimes produces these artifacts. One easy solution would be to have the ribbon expand by a very small amount (e.g. 1px) in every direction. This would not be perceptible for people, but probably fix the glitches pretty reliably.