How to reproduce:
1. Download attached project file ant open "Example" Scene
2. Check the console for errors. Running the scene is not needed

Actual result: Calling Sprite.OverrideGeometry produces the "Invalid vertex array. Some vertices are outside of the Sprite rectangle" error, although the set vertices are based on the original vertices. Notice the original vertices array of the SpriteExample component on the Example GameObject in the scene. Then compare the min/max of the new vertices array.

Reproduced with: 5.6.4p3, 2017.1.2p3, 2017.2.0p4, 2017.3.0b11, 2018.1.0a6