An enabled input field in the receive form which has just been added recently (so that the `tr.success` has a green background) looks a bit as if it is disabled. I think the reason for that is this line which removes the background color, right?

For comparison, add a `StockArticle` to a `Delivery` and look and the loooooooooooong input field there. It has a white background covering the green `tr.success` background. If I manually add `.package` there, it turns transparent, i.e., green.