### Godot version

4.0.dev(0810ecaafdbee3ea747219e6ab3a8de5d2216a09)

### System information

any

### Issue description

https://user-images.githubusercontent.com/61938263/215898051-8506b45e-a9d4-4c3f-b1b3-28f202dea67b.mp4



### Steps to reproduce

Editt AnimationBlendTree

### Minimal reproduction project

N/A
if (!o_gn) {
						continue;
					}
					if (o_gn->is_selected()) {
						o_gn->set_drag(true);
						if (o_gn->is_comment()) {
							_update_comment_enclosed_nodes_list(o_gn, comment_enclosed_nodes);
							_set_drag_comment_enclosed_nodes(o_gn, comment_enclosed_nodes, true);
						}
					}
				}
			} else {
				if (_filter_input(b->get_position())) {
					return;
				}
				if (panner->is_panning()) {
					return;
				}
				
				box_selecting = true;
				box_selecting_from = b->get_position();
				if (b->is_ctrl_pressed()) {
					box_selection_mode_additive = true;
					previous_selected.clear();
					for (int i = get_child_count() - 1; i >= 0; i--) {
						GraphNode *gn2 = Object::cast_to<GraphNode>(get_child(i));
						if (!gn2 || !gn2->is_selected()) {
							continue;
						}
						previous_selected.push_back(gn2);