I’m still encountering this problem with only some of our animations after UE5 Early Access Release 2.
It seems top be related to this change in UAnimSequence::ExtraRootMotionFromRange
Previously in UE4 this was being done with the TrackToSkeletonMap .
It looks like the TrackToSkeletonMap has been deprecated and it’s just using the reference skeletons.
The problem is I’m getting different rotations on some skeletons than others. Our normal human and one of our one-off’s have the correct rotation, and the others do not.
We haven’t been able to figure out what’s different between the files, the FBX files look identical.