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Odd bevel behavior in blender 2.8 latest builds: vertices do not conform to existing curvature
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Description

System Information
Operating system: Windows 10, 64 bit
Graphics card: Geforce GTX 1070 8 gb vram

Blender Version
Broken: blender-2.80.0-git.f18373a9ab1a-windows64
Worked: blender-2.80.0-git.caf52e3779a9-windows64

Short description of error
Hello there wonderful people of blender development community! The latest builds of blender seem to have a weird bevel behavior. Namely bevels are not conforming to the existing curvature of the mesh if there's an n-gon surface. Although they were working perfectly couple of builds before. Here's an example:

This is what it does right now:

This is how it used to work and should work, i guess:

Exact steps for others to reproduce the error

  1. Create a cube in a startup scene.
  2. Bevel the top 4 edges of the cube.
  3. Bevel other corners of the cube and witness the bug.

Watch this video for details:

Event Timeline

Brecht Van Lommel (brecht) triaged this task as Waiting for Developer to Reproduce priority.May 26 2019, 10:49 AM
Howard Trickey (howardt) lowered the priority of this task from Waiting for Developer to Reproduce to Normal.May 26 2019, 4:54 PM

I confirm this bug. Will work on it.

Brecht Van Lommel (brecht) raised the priority of this task from Normal to Confirmed, Medium.May 27 2019, 2:45 AM