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Sculpt Mode Grab Active Vertex and Dynamic Mesh Preview Bug.
Open, Confirmed, MediumPublic

Description

System Information
Operating system: Windows-10-10.0.1709 64 Bits
Graphics card: GeForce GTX 1050 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 416.34

Blender Version
Broken: version: 2.81 (sub 10), branch: master, commit date: 2019-09-10 15:51, hash: rB01a3a9c8181d

Short description of error
Grab Active Vertex and Dynamic Mesh Preview are not working, You get locked and the UI flickers.
You have to kill Blender from the Task Manager and sometimes simply Crashes.

Exact steps for others to reproduce the error
Have an Object with Subdivison Modifier->Sculpt Mode-> Grab Brush->Enable Grab Active Vertex(Brush Settings).

Demo of the Bug:


Blend File:

Details

Type
Bug

Event Timeline

Yes, I can confirm. It never worked, even in the sculpt branch. (Windows)

I don't have a Windows PC to debug this. Does this patch fix the issue?

I don't have a Windows PC to debug this. Does this patch fix the issue?

I applied the patch but didn't work for me,but this time it didn't crash when you try to click the Menus & Workspaces..etc, I guess we need a Developer with Windows OS to figure this out.

@Zino Guerr (Zino) What does this patch do on Windows? Does it render something when sculpting with a subdivision surface modifier?

@Zino Guerr (Zino) What does this patch do on Windows? Does it render something when sculpting with a subdivision surface modifier?

No it doesn't Render anything, it's same as before Brush Cursor is locked and only System Cursor can be moved.

Only seems to work when you zoom in and out.

Zino Guerr (Zino) added a comment.EditedThu, Sep 12, 9:47 AM

I managed to get it to draw like Chris but without zooming, it has to do with the Gizmos, i mapped the Viewport Gizmos toggle to a hotkey and have to be on first and it gave this effect, but the moment you click it crashes.

For the Pose tool i only get a single point drawn.


Hope this can help a bit.

Philipp Oeser (lichtwerk) triaged this task as Confirmed, Medium priority.