The title says it all. After having all kinds of weird problems with AnimStarterPack (including, but not limited to AnimOffset hands moving at different speeds) I took a second look and saw that the IK handles of the skeleton were stuck in place.
I have reported the first issue where Animation Starter Pack IK handles are not moving as JIRA [UE-22005].
The second part of this issue, where the IK handles have been rotated 90 degrees forward has already been reported as JIRA [UE-21242].
When one or both of these issues have been resolved, we will notify you with an update to this post. Thanks for bringing this to our attention.