Setting Physics Blend Weight to anything between 0 and 1 causes erratic behavior

If the user simulates all bodies, and then sets the physics blend weight to a decimal value between 0 and 1, the skeletal meshes will spin out of control. This doesn't happen if the physics blend weight is set to 1 or 0.

UDN link: https://udn.unrealengine.com/questions/253395/setphysicsblendweight-causes-character-to-freak-ou.html

1. Launch UE4Editor.exe ContentExamples.
2. Open PhysicalAnimation.umap.
3. Open the PhysicalAnimationBlending blueprint.
4. Add an Event Begin Play node.
5. Drag off the node and add a Set All Bodies Simulate Physics (SkeletalMesh1) node.
6. Enable New Simulate.
7. Drag off the node and add a Set All Bodies Physics Blend Weight (SkeletalMesh1) node.
8. Set Physics Blend Weight to 0.1.
9. Compile the blueprint.
10. Play in editor.