Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1050 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.84
Broken: version: 2.83.5, branch: master, commit date: 2020-08-19 06:07, hash: rBc2b144df395f
Worked: 2.83.4 official
Short description of error
When using an mp4 or an image sequence as an animated texture, cycles allways shows the first frame of the texture.
With the same material eevee updates the texture frames correctly.
2.83.4 works as it should
Exact steps for others to reproduce the error
I'll attach an example blend, but the steps to reproduce are really simple.
Just use a video or image sequence as a texture.