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Weight Painting affects hidden part of mesh
Open, Needs TriagePublic


System Information
Operating system: Windows 10 Pro
Graphics card: GTX 1070

Blender Version
Broken: 2.80, 2019-01-01 15:44 Hash: 4dd0a90f4213

Short description of error

If I hide a portion of my mesh, because I want to isolate a section for weight painting, the weight painting still impacts the hidden part{F6162411} of the mesh.

Exact steps for others to reproduce the error

Open blend file supplied, it should take you to a section of roof that's been manually painted.

Alt-H to verify the rest of the mesh is currently unweighted, once verified, hide again.

Go to any weight painting tool, gradient, brush, doesn't matter, and paint the roof with the rest of the mesh hidden however you like.

Once done, Alt-H to unhide the remainder of the mesh and you'll see it's been weighted.



Event Timeline

I opened the attached file in Blender rBdf3e7d0361c6, Ubuntu Linux 4.13.0-25-generic.

I switched to Weight paint mode and used different brushes to see if they affect the hidden vertices (bug) or not (OK)

  • Draw: OK
  • Smooth: OK
  • Average: OK
  • Smear: OK
  • Sample Weight: bug
  • Sample Vertex Group: bug
  • Gradient: bug