In official plug in,when you put LeapMotioncontroller actor into the unreal world but hand does not show up in the location you put the controller but some location far away. I found the problem is in Engine/Runtime/LeapMotionController\Source\Private \ LeapMotionHandActor.cpp at about line 153 PrimitiveComponent->SetRelativeLocationAndRotation(TargetPosition, TargetOrientation, true); }
I changed it to: PrimitiveComponent->SetWorldLocationAndRotation(TargetPosition, TargetOrientation, true)
Now Hand correctly appeared at he location you placed it