Windows 7 64-bit
GeForce GTX 680
Broken: 2.78c official release
Worked: 2.78a official release
Short description of error
When an object has more than 1 material and more than 1 UV Map (each material using a different UV Map in the material nodes), occasionally a material will use the incorrect UV Map during animation. On average, it happens around 4-8 times per 100 frames.
Very rarely it might crash.
I could not reproduce this with only 1 material and multiple UV Maps.
Exact steps for others to reproduce the error
The attached file has 1 object with 2 materials, each using a different UV Map.
- open file and Render Animation
- check animation result
If same problem occurs, a dot will move occasionally (uses different UV map) on a few frames.