Steps to reproduce:
1. Open the attached project (Test.zip)
2. Open the Assets/Scene.unity scene
3. Select "Weapons_0 (1)" object in the Hierarchy and delete it
4. Select "Weapons_0" object in the Hierarchy(Rotation z is set to -140 and flip Y is checked)
5. Duplicate the selected object
4. Observe in the Game window, it warps

Expected result: Sprite should not warp
Actual result: Sprite warps

Note:
If sprite use the same material, it warps
Sprite warps when rotating on the z axis

Reproduced with: 5.5.0f3, 5.5.1f1, 5.6.0a1, 5.6.0b4, 5.6.0b6
Not reproduced with: 5.3.7p3, 5.4.4p2
Regression introduced in 5.6.0a1