Issue with Handles in Unity 5.6.1p4

[Jithendrakumar]

Hi,

Its a great work you did Thanks for the Effort and making it freely available, however there's a small bug while moving handle of spline. whenever i move x or y or z gizmo, the position doesn't start from where i clicked on, it moves to a little distance and starts attaching to mouse.

Can you check and confirm if this is problem with only my implementation or is it a bug??