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Maniphest T81866

UVS Get Screwed Up After Removing Geometry and Moving with "Correct Face Attributes" Enabled.
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Description

System Information
Operating system: Win 10
Graphics card: 1060 3gb

Blender Version
Broken: version: 2.90.1

Short description of error
When deleting things from the mesh, you have to do your movement then undo to actually get it to not screw up UVs.

Steps to reproduce
It's hard to say because of the circumestances this is used in so here is a video. This bug isn't all that important to get fixed because you get around it quite fast.
https://www.youtube.com/watch?v=LDa7J83vcpc

In the video, I dissolve and add edge loops. When I move the existing edge loops, the UVS don't break, but when I remove the ones I don't need, it screws the UVs until I undo and do the motion again.

Related Objects

Event Timeline

Seth Quick (SethTooQuick) created this task.Oct 19 2020, 8:59 PM
Philipp Oeser (lichtwerk) changed the task status from Needs Triage to Needs Information from User.Oct 20 2020, 12:49 PM
Philipp Oeser (lichtwerk) added a project: Modeling.
Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).

This sound a whole lot like T81060: Vertex Slide and Loop Cut and Slide tools breaks the UVs and Vertex Colors after topology changes [new or deleted] (if CustomSplitNormals are present)
(it is kind of hard to tell without having access to your example .blend file)

This should be fixed already, see rBaafd71a8a160: Fix T81060: CustomData Correction sometimes breaks UVs and Vertex Colors.
Could you please check if a fresh build from https://builder.blender.org/download/ fixes it for you?

Beware though: the fix actually introduced other issues, see T81865, T81860, a fix for these is already in review (D9278)

Campbell Barton (campbellbarton) closed this task as Archived.Nov 4 2020, 12:18 AM
Campbell Barton (campbellbarton) claimed this task.
Campbell Barton (campbellbarton) added a subscriber: Campbell Barton (campbellbarton).

More than a week without reply or activity.
Due to the policy of the tracker closing for until required info/data are provided.

If the problem persists please open a new report with the required information.