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Limited bevel causes edges to move incorrectly (2.75 regression)
Closed, ResolvedPublic

Description

System Information
OS X 10.10.4, AMD 5770

Blender Version
Broken: 2.75 official (and 2.75.2 15c301f)
Worked: 2.74

Short description of error
Using the bevel modifier's limit feature causes some edges to "pop out of place" and move slightly, messing up shading.

Exact steps for others to reproduce the error
See attached bevel_warp.blend file. Play with the limit settings on the bevel modifier, notice how "angle" limit mode causes the mesh to distort. If you view the model from top-ortho and toggle the modifier visibility on and off, you can clearly see it's not a shading artifact and the modifier is actually moving edges when it shouldn't be.

Event Timeline

Jason Clarke (jtheninja) set Type to Bug.
Jason Clarke (jtheninja) created this task.
Jason Clarke (jtheninja) raised the priority of this task from to Needs Triage by Developer.
Sergey Sharybin (sergey) triaged this task as Normal priority.Jul 6 2015, 12:05 PM

Yes, I can see the problem and will work on a fix.

Thanks for the report.
I think this fix should go into a 2.75a release, if possible.