"Split Struct Pin" breaks functionality of Transform Bone node

Using the "Split Struct Pin" right click option on the rotation pin breaks the functionality of the Transform Bone node in Animation Blueprints

NOTE: I noticed the Roll/Pitch/Yaw are in a different order when the pin is collapsed compared to when it is split. Could this be related?

1. Open the attached example project
2. Find the ThirdPersonAnimBlueprint
3. In the AnimGraph, locate the Transform Bone node
4. Right click on the rotation pin
5. Select Split Struct Pin
6. Note the mannequin's head position
7. Recompile
8. You can collapse the struct pin again to see the original

Result: Head position has changed
Expected: If 45 is in "Roll" before and after the split, then the head position is the same.