Hide the 3D editor selection box when View Gizmos is disabled

editor/plugins/node_3d_editor_plugin.cpp

@@ -4637,7 +4637,9 @@ Object *Node3DEditor::_get_editor_data(Object *p_what) {
 	RS::get_singleton()->instance_geometry_set_cast_shadows_setting(
 			si->sbox_instance,
 			RS::SHADOW_CASTING_SETTING_OFF);
-	RS::get_singleton()->instance_set_layer_mask(si->sbox_instance, 1 << Node3DEditorViewport::MISC_TOOL_LAYER);
+	// Use the Edit layer to hide the selection box when View Gizmos is disabled, since it is a bit distracting.
+	// It's still possible to approximately guess what is selected by looking at the manipulation gizmo position.
+	RS::get_singleton()->instance_set_layer_mask(si->sbox_instance, 1 << Node3DEditorViewport::GIZMO_EDIT_LAYER);
 	RS::get_singleton()->instance_geometry_set_flag(si->sbox_instance, RS::INSTANCE_FLAG_IGNORE_OCCLUSION_CULLING, true);
 	si->sbox_instance_xray = RenderingServer::get_singleton()->instance_create2(
 			selection_box_xray->get_rid(),
@@ -4645,7 +4647,9 @@ Object *Node3DEditor::_get_editor_data(Object *p_what) {
 	RS::get_singleton()->instance_geometry_set_cast_shadows_setting(
 			si->sbox_instance_xray,
 			RS::SHADOW_CASTING_SETTING_OFF);
-	RS::get_singleton()->instance_set_layer_mask(si->sbox_instance_xray, 1 << Node3DEditorViewport::MISC_TOOL_LAYER);
+	// Use the Edit layer to hide the selection box when View Gizmos is disabled, since it is a bit distracting.
+	// It's still possible to approximately guess what is selected by looking at the manipulation gizmo position.
+	RS::get_singleton()->instance_set_layer_mask(si->sbox_instance_xray, 1 << Node3DEditorViewport::GIZMO_EDIT_LAYER);
 	RS::get_singleton()->instance_geometry_set_flag(si->sbox_instance, RS::INSTANCE_FLAG_IGNORE_OCCLUSION_CULLING, true);
 
 	return si;