In the FeatureManager design tree, select the Top plane.
Click PropertyManager
to display the 3DSketch
PropertyManager (top of the left column, next to the graphics area).
Plane2 is displayed under Planes (only planes that you add are listed).
Under Visibility, clear Planes and select Relations.

The plane is hidden, and all the sketch relations are displayed.
Under Visibility, select Planes and clear Relations.
Click FeatureManager
design tree
.