### Godot version

4.0.dev(2fdaf2919c03ab50f971f2d51616d4ee329d29af)

### System information

any

### Issue description

AnimationPlayer is unintentionally hidden.

https://user-images.githubusercontent.com/61938263/217088704-c1ad44d6-ef7b-4b10-b351-f9f9fa166e39.mp4


### Steps to reproduce

Select AnimationTree -> Select AnimationPlayer

### Minimal reproduction project

N/A
for (int i = 0; i < bottom_panel_items.size(); i++) {
		if (bottom_panel_items[i].control->is_visible()) {
			_bottom_panel_switch(false, i);
			break;
		}
	}
}
void EditorNode::make_bottom_panel_item_visible(Control *p_item) {
	for (int i = 0; i < bottom_panel_items.size(); i++) {
		if (bottom_panel_items[i].control == p_item) {
			_bottom_panel_switch(true, i);
			break;
		}
	}
}
void EditorNode::raise_bottom_panel_item(Control *p_item) {
	for (int i = 0; i < bottom_panel_items.size(); i++) {
		if (bottom_panel_items[i].control == p_item) {
			bottom_panel_items[i].button->move_to_front();
			SWAP(bottom_panel_items.write[i], bottom_panel_items.write[bottom_panel_items.size() - 1]);
			break;
		}
	}
	for (int i = 0; i < bottom_panel_items.size(); i++) {
		bottom_panel_items[i].button->disconnect("toggled", callable_mp(this, &EditorNode::_bottom_panel_switch));
		bottom_panel_items[i].button->connect("toggled", callable_mp(this, &EditorNode::_bottom_panel_switch).bind(i));
	}
}
void EditorNode::remove_bottom_panel_item(Control *p_item) {