STEPS TO REPRODUCE
1. Launch iClone 6
2. Navigate to Set > Path, then apply Circle01
3. Go to Modify > Path, click "Edit Path" button
4. Press Ctrl and select two random control points
5. Click "Move" on Toolbar, drag along with blue circle

ACTUAL RESULT
The transform gizmos disappeared

EXPECTED RESULT
The transform gizmos won't disappear if edit path control points