Regression: Live unwrapping wraps hidden faces #103971

New Issue

Gabriel Radić · 2023-01-18T14:03:34+01:00

Gabriel Radić commented

2023-01-18 14:03:34 +01:00

System Information
Operating system: Windows 10
Graphics card: 6800 XT AMD

Blender Version
Broken: 3.4.1
Worked: 3.3.x
Caused by e3075f3cf7

Short Description
Live Unwrap in 3.4.1, wraps hidden faces while marking seams or doing any sort of unwrap, except if you MANUALLY wrap the faces, by click U-> Unwrap.
If the wrapping is manual (not live unwrapping) the features work as intended, and does not pack nor unwrap hidden faces.

Make a new cube, hide the rest of the faces and enable Live Unwrapping. Cut said face by marking seam, the rest of the faces will unwrap regardless if they are hidden or not.

Steps to Reproduce

Open attached file
make sure live unwrap is enabled in N panel of viewport
use {key alt h} to see hidden faces. and hide them again
for selected edge, mark seam
unhide hidden faces (there position is changed)
LiveIssue.blend

How it should be:

**System Information** Operating system: Windows 10 Graphics card: 6800 XT AMD **Blender Version** Broken: 3.4.1 Worked: 3.3.x Caused by e3075f3cf7 **Short Description** Live Unwrap in 3.4.1, wraps hidden faces while marking seams or doing any sort of unwrap, except if you MANUALLY wrap the faces, by click U-> Unwrap. If the wrapping is manual (not live unwrapping) the features work as intended, and does not pack nor unwrap hidden faces. Make a new cube, hide the rest of the faces and enable Live Unwrapping. Cut said face by marking seam, the rest of the faces will unwrap regardless if they are hidden or not. **Steps to Reproduce** - Open attached file - make sure live unwrap is enabled in N panel of viewport - use {key alt h} to see hidden faces. and hide them again - for selected edge, mark seam - unhide hidden faces (there position is changed) [LiveIssue.blend](https://archive.blender.org/developer/F14173412/LiveIssue.blend) - - - ![image.png](https://archive.blender.org/developer/F14171886/image.png) ![image.png](https://archive.blender.org/developer/F14171889/image.png) ![image.png](https://archive.blender.org/developer/F14171892/image.png) How it should be: ![image.png](https://archive.blender.org/developer/F14171886/image.png) ![image.png](https://archive.blender.org/developer/F14171896/image.png) ![image.png](https://archive.blender.org/developer/F14171900/image.png)

Gabriel Radić commented

2023-01-18 14:03:34 +01:00

Added subscriber: @GabrielRadic

Germano Cavalcante commented

2023-01-18 21:02:05 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2023-01-18 21:02:05 +01:00

Reminds me of #103237 (UV Unwrap changes nonselected uvs).
The steps to reproduce this bug are not clear.
Could you provide a simple .blend file and describe in more detail how to replicate the bug through it?

Reminds me of #103237 (UV Unwrap changes nonselected uvs). The steps to reproduce this bug are not clear. Could you provide a simple .blend file and describe in more detail how to replicate the bug through it?

Gabriel Radić commented

2023-01-19 00:08:50 +01:00

LiveIssue.blend

Added file.

So if you now cut (mark seam) the shown model, while live unwrap is on, the hidden part of it will be unwrapped again, even though it is hid.

[LiveIssue.blend](https://archive.blender.org/developer/F14173412/LiveIssue.blend) Added file. So if you now cut (mark seam) the shown model, while live unwrap is on, the hidden part of it will be unwrapped again, even though it is hid.

Pratik Borhade commented

2023-01-19 07:48:39 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'