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Hair dynamics causes hair to disappear after start rendering
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Description

System Information
Windows 10 Professional Build 15063.726
NVIDIA GeForce GTX 1050

Blender Version
Broken: 2.79 5bd8ac9 (Steam version)

Short description of error
When attempting to render an object with hair dynamics enabled (and baked of course), the hair is not showing up in the render results; After exiting the view, the hair in viewport preview disappears. Freeing the bake and changing hair number/length will make them reappear in viewport. Rendering without hair dynamics is working.

Exact steps for others to reproduce the error
Just try to render the attached


file with and without hair dynamics enabled.

Event Timeline

Sergey Sharybin (sergey) changed the task status from Unknown Status to Unknown Status.Dec 4 2017, 11:03 AM
Sergey Sharybin (sergey) claimed this task.

Thanks for the report, but hair+cache is subject of redesign for 2.8. Unless that's a regression since previous 2.7x release, use disk cache which works reliably and stay tuned for more friendly caching system in Blender 2.8!