Extrude Manifold error math code #80661

System Information
Operating system: Darwin-20.1.0-x86_64-i386-64bit 64 Bits
Graphics card: AMD Radeon Pro 575 OpenGL Engine ATI Technologies Inc. 4.1 ATI-4.0.36

Blender Version
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-06 20:13, hash: d268a43b25
Worked: (newest version of Blender that worked as expected)

Short description of error
Extrude Manifold error math code

Exact steps for others to reproduce the error
I show you youtube about Extrude while edit mode I see youtube and I play and I found out error.

I learn from him explain only eyes view screen. I am full deaf and I only look at closed caption. This one https://youtu.be/Zh3kh5f1N2I

That me myself I can show you there error extrude https://youtu.be/P3K6kYtijas

I don't use speak voice. Only show mouse there to click and do.

Create Plane
Edit Mode
Extrude Manifold
Drag move up
Control + R and type 10 then push the enter key 2 times
then select and drag everything you can see error.

Added subscriber: @Kent-Davis

I forget to put .blend file. Extrude error math code.blend

Added subscriber: @grosgood

This looks like another manifestation of #80440. In that report, extruding a volume past an edge loop created non-manifold faces, undercutting the very idea of "manifold extrusion." This reporter has uncovered that non-manifold edges can also arise. Two useful illustrations of the same underlying problem, methinks.

Hehe ok

Added subscriber: @lichtwerk

Yep, I think we can merge these two tasks (this one and #80440)

Closed as duplicate of #80440

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Extrude Manifold error math code #80661