UICamera.Notify(Line922)
go.SendMessage(funcName, obj, SendMessageOptions.DontRequireReceiver);
↓
UIDragObject.OnPress(Line170)
if (mPanel.ConstrainTargetToBounds(target, ref mBounds, false))
↓
UIPanel.ConstrainTargetToBounds(Line1681)
SpringPosition sp = SpringPosition.Begin(target.gameObject, target.localPosition + offset, 13f);
sp.ignoreTimeScale = true;
sp.worldSpace = false;