Operating system: Windows 10
Graphics card: GTX 970
Short description of error
Channels are incorrect when saving out a transparent render of volumes.
Render looks correct in Render preview, but when saving the file, the channels are misaligned and alpha seems to be missing.
For some reason it's is different with Cycles and Eevee, though both have issues.
I have tried saving out as different formats and bitdepth, PNG, TIFF, OpenEXR with no improvement.
Turning off "transparent" there are no issues.
Issues occur both when saving from the render preview and when outputting renders directly from a batch render.
I have tried creating a new file from scratch and get the exact same issue.
Exact steps for others to reproduce the error
Open the below file and try to render and save.