Viewport_Plane
Does it work with any object?
Yes, with any mesh in edit mode, an object.
Can I disable the plane restriction?
Of course! It's "Intervention Mode" - a switch that gives you freedom when you need it.
Does symmetry work in object mode?
Yes, but it's more useful in edit mode for detailed modeling.
Does it affect performance?
Minimally. The system is optimized to work without slowing down Blender.
Do I need to restart Blender to install it?
No. You install it, activate it, and that's it.