Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.66
Broken: version: 2.82 (sub 6), branch: master, commit date: 2020-01-09 10:40, hash: rB002f5b826c7c
(also not working in 2.81a)
Short description of error
I have a character with 2 eyes. I move the UV texture coordinates to move the irises around with the help of a driver.
On the mesh are 2 custom properties, eye_x and eye_y, these are driving the X and Y properties in the Mapping node.
When I manually change the eye_x and eye_y values, the 'Mapping' properties update, however, when I animate them and press play, the Mapping properties do not update.
Exact steps for others to reproduce the error
Open example blend.
Manually change the eye_x and eye_y property on the Mesh data and observe the mapping coordinates update correctly.
Now move playhead and observe no change in the mapping coordinates.