### Godot version

4.1.1

### System information

linux

### Issue description

[simplescreenrecorder-2023-08-30_15.01.51.webm](https://github.com/godotengine/godot-proposals/assets/71937306/537d92b9-4f98-4fe6-adf4-71297be0471a)

I guess this wasn't the case before since I could save a layout named "2 monitors".

### Steps to reproduce

press space

### Minimal reproduction project

none
select_full_icons_button->set_visible(false);
		deselect_all_icons_button->set_visible(false);
		select_icons_warning_hb->set_visible(false);
	}
	if (stylebox_amount > 0) {
		Array arr;
		arr.push_back(stylebox_amount);
		select_styleboxes_label->set_text(TTRN("1 stylebox", "{num} styleboxes", stylebox_amount).format(arr, "{num}"));
		select_all_styleboxes_button->set_visible(true);
		select_full_styleboxes_button->set_visible(true);
		deselect_all_styleboxes_button->set_visible(true);
	} else {
		select_styleboxes_label->set_text(TTR("No styleboxes found."));
		select_all_styleboxes_button->set_visible(false);
		select_full_styleboxes_button->set_visible(false);
		deselect_all_styleboxes_button->set_visible(false);
	}
}
void ThemeItemImportTree::_toggle_type_items(bool p_collapse) {
	TreeItem *root = import_items_tree->get_root();
	if (!root) {
		return;
	}
	TreeItem *type_node = root->get_first_child();
	while (type_node) {
		type_node->set_collapsed(p_collapse);
		type_node = type_node->get_next();
	}
}
void ThemeItemImportTree::_filter_text_changed(const String &p_value) {