### 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
continue;
				}
				if (gn_selected->is_resizing()) {
					continue;
				}
				if (gn_selected->has_point((b->get_position() - gn_selected->get_position()) / zoom)) {
					gn = gn_selected;
					break;
				}
			}
			if (gn) {
				if (_filter_input(b->get_position())) {
					return;
				}
				
				dragging = true;
				drag_accum = Vector2();
				just_selected = !gn->is_selected();
				if (!gn->is_selected() && !Input::get_singleton()->is_key_pressed(Key::CTRL)) {
					for (int i = 0; i < get_child_count(); i++) {
						GraphNode *o_gn = Object::cast_to<GraphNode>(get_child(i));
						if (!o_gn) {
							continue;
						}
						o_gn->set_selected(o_gn == gn);
					}
				}
				gn->set_selected(true);
				for (int i = 0; i < get_child_count(); i++) {
					GraphNode *o_gn = Object::cast_to<GraphNode>(get_child(i));