Alpha from .exr flipbook

I’m using the free flipbook examples from this blog post:

The .tga files work fine using shader graph, but for the .exr files the alpha is not correct.

If it helps, I try to follow this tutorial.

tga:

exr:

How can I fix this? I prefer using .exr over .tga for reasons I don’t want to list here.

There seems to be a bug in the EXR import.
Workaround: force “Format” to “RGBA 32 bit”.