Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.67
Broken: version: 2.80 (sub 55), branch: blender2.7, commit date: 2019-04-08 21:54, hash: rB2a79e3463130
Short description of error
To give context I am keyframing the "offset" of an image sequence node within a material. It is set to show 1 Frames with Start Frame set to 1.
I will animate the offset with a range from -1 to 4, shuffling between these frame to animate a texture in the timeline. Doing a viewport render of the scene will result in correct frames being presented at the right times, but, if doing a proper animation Render it will skip crucial keyframes or appear to have a different offset entirely and hold the image sequence on the wrong frame(s). The keyframes were auto-created with default handles and interpolation.