Error when creating orderline with Add new bc price has packing item, which cannot be selected

[metas-dh]

Is this a bug or feature request?

Bug (not sure this is purely frontend, though)

What is the current behavior?

When using Add newto create an orderline, for a product that has a packing item set in product prices, an error pops up when selecting that product; but the packing item cannot be selected so that the price is used, after the error the product field is set back. Same product can be selected with batch entry and product proposal, though.

Which are the steps to reproduce?

See vid in me03 issue.

What is the expected or desired behavior?

Should work; in case the packing item is needed, that shall be selectable / directly set as well when the product is set.