Product Search does not work for composite and bundled products

In the admin panel under products -> edit product -> product data you can select which kind of product you like to create. For both extra plugins ‘product bundles’ and ‘composite products’ the menu within product data will be enhanced with new tabs for setting up the complex products.

For composite products, it’s a ‘Components’-tab, for product bundles it’s a ‘bundled product’-tab. In both menus you can add simple or variable products to add them to the bundle or composite product.

You can only add them via a search field. This search does not return anything in both tabs, so it is not possible to change existing products anymore or neither to create a new one via admin panel.