Operating system: Windows 10
Graphics card: GTX1080Ti
Broken: 2.8 latest master
Short description of error
Pack feature of UV editor in Blender 2.8 scales packed islands non uniformly, making it useless, for anything. A 3D software with no functional UV packing feature is a big problem, as it means any UV mapping work has to be done outside of Blender.
UV islands before Pack:
Same UV islands after Pack:
Exact steps for others to reproduce the error
1, Open attached file:
2, In Mesh mode, select all mesh elements and Uwrap the mesh using Cube projection:
3, In the UV editor, select all UV islands and pack them using "Pack" operation
Result: Pack feature produces garbage, non uniform UV layout
Expected: Pack feature does not alter scale of the UV islands in ANY way unless explicitly allowed by user.