Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 980/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.87
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-22 12:02, hash: rB8d1123ba220b
Worked: Blender 2.83 LTS
Caused by rB93c8955a722b: Mesh Edit: preserve Custom Normal vectors in topology operators.
Short description of error
Vertex Slide and Loop Cut and Slide tools breaks the UVs and Vertex Colors on new vertices, please see the video or the attached .blend file.
Exact steps for others to reproduce the error
- Open the attached file
- Press J to cut polygons between selected vertices
- Select new vertex
- Slide it with G G hotkeys
- If you Undo the Vertex Slide, you can slide it again without this problem, but as soon you create a new geometry -- it happens again
- Same happens with Loop Cut and Slide tool (Ctrl + R)
Thank you for checking out this bug!