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Maniphest T59359

In 2.80 some objects with multires modifier (originally created in 2.79b) are with broken geometry
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Description

System Information
Operating system: Ubuntu 18.04.1 LTS
Graphics card: NVidia GeForce GTX 680

Blender Version
Broken:
This is how the object looks after opening in 2.80 (aca13040dac, 2018-12-13). Its geometry has spikes not originally present. This issue affects many different objects I have in my scenes with multires modifier.

Worked: (optional)
In 2.79b release the file opens as expected:

Exact steps for others to reproduce the error
Just open attached .blend in 2.80 and you will see broken geometry.

multires.blend19 MBDownload

Related Objects

Event Timeline

Lissanro Rayen (Dragon.Studio) created this task.Dec 14 2018, 10:34 AM
Lissanro Rayen (Dragon.Studio) updated the task description. (Show Details)Dec 14 2018, 11:15 AM
Sebastian Parborg (zeddb) lowered the priority of this task from 90 to 30.Dec 14 2018, 2:19 PM
Sebastian Parborg (zeddb) added a subscriber: Sebastian Parborg (zeddb).

I can't open the file you attached. 2.79 and 2.8 complains about a missing DNA block.

Lissanro Rayen (Dragon.Studio) raised the priority of this task from 30 to 90.Dec 14 2018, 2:56 PM
Lissanro Rayen (Dragon.Studio) updated the task description. (Show Details)
Lissanro Rayen (Dragon.Studio) added a comment.Dec 14 2018, 3:03 PM

It seems I have uploaded corrupted .blend, I cannot open it either. Sorry about that, not sure how this happened. I have attached new .blend file. To make sure everything is OK, I downloaded it and I can open it in both 2.79 and 2.80.

Sebastian Parborg (zeddb) assigned this task to Sergey Sharybin (sergey).Dec 14 2018, 3:03 PM
Sebastian Parborg (zeddb) lowered the priority of this task from 90 to 50.
Dalai Felinto (dfelinto) removed Sergey Sharybin (sergey) as the assignee of this task.Dec 23 2019, 4:35 PM
Dalai Felinto (dfelinto) added a project: Tracker Curfew.
Dalai Felinto (dfelinto) added a subscriber: Sergey Sharybin (sergey).
Pablo Dobarro (pablodp606) closed this task as a duplicate of T58473: Multires: changes not smoothly propagated from low to high, for example with apply base.Jan 10 2020, 4:04 PM