Hiding faces on a specific mesh causes random hidden edges to display in place of non-hidden ones #111992

New Issue

James Noeckel · 2023-09-05T19:32:10+02:00

James Noeckel commented

2023-09-05 19:32:10 +02:00

System Information
Operating system: macOS-13.5.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Pro 1.2

Blender Version
Broken: version: 3.6.2, branch: blender-v3.6-release, commit date: 2023-08-16 16:43, hash: e53e55951e7a
Worked: unknown, but same bug occurs in 3.5

Short description of error
When selecting certain faces on this mesh (see attached STL file), pressing H or shift-H to hide faces will cause a random set of floating edges to display in the hidden regions, and the visible region will display with no edges (making it impossible to see your selection in edge select mode). The set of edges is truly random, as undo / redo will show a different set of edges each time.

Here is the full mesh with an example selection	Here is the result of pressing shift-H

Exact steps for others to reproduce the error

Open the attached blend file bugball.blend, and enter edit mode on the ball to see the random floating ghost edges.
Press 2 and try selecting things (selections on the un-hidden faces are invisible, and the ghost edges can't be selected).
Press Alt-H and Shift-H to see that a different set of floating edges appears every time.

If the blend file doesn't work, try and import the attached STL file using file -> import -> stl and observe the same behavior.

**System Information** Operating system: macOS-13.5.1-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 Pro 1.2 **Blender Version** Broken: version: 3.6.2, branch: blender-v3.6-release, commit date: 2023-08-16 16:43, hash: `e53e55951e7a` Worked: unknown, but same bug occurs in 3.5 **Short description of error** When selecting certain faces on this mesh (see attached STL file), pressing H or shift-H to hide faces will cause a random set of floating edges to display in the hidden regions, and the visible region will display with no edges (making it impossible to see your selection in edge select mode). The set of edges is truly random, as undo / redo will show a different set of edges each time. | Here is the full mesh with an example selection | Here is the result of pressing shift-H | | -- | -- | | ![Screenshot 2023-09-05 at 10.10.01 AM.png](/attachments/d1b8e310-7e5f-4203-943b-a4b2eca49564) | ![Screenshot 2023-09-05 at 10.09.57 AM.png](/attachments/d331d434-018c-4d81-ab31-5a56bc021674) | **Exact steps for others to reproduce the error** 1. Open the attached blend file bugball.blend, and enter edit mode on the ball to see the random floating ghost edges. 2. Press 2 and try selecting things (selections on the un-hidden faces are invisible, and the ghost edges can't be selected). 3. Press Alt-H and Shift-H to see that a different set of floating edges appears every time. If the blend file doesn't work, try and import the attached STL file using file -> import -> stl and observe the same behavior.

bugball.blend

3.3 MiB

Screenshot 2023-09-05 at 10.09.57 AM.png

861 KiB

bugball.stl

1.7 MiB

Screenshot 2023-09-05 at 10.10.01 AM.png

2.1 MiB

👀 1

James Noeckel added the

Severity

Normal