Just clarifying this statement if it was indeed a case of error and not just a typological error.
Lutherans believe in consubstantiaion or something similar where the bread remains present and is “infused” with the essence of Christ. This is of course contrasted with orthodox christianity and the teaching of the universal church which believes in transubstantiation where the substance of the bread and wine is changed to truly become the body, blood, soul and divinity of christ, this being merely under the accidents of the appearance of bread and wine with the bread and wine being truly absent. The eastern churches believe in the same thing although they do not define it as transubstantiation.
So although they believe in the real presence per se, they hold to a heterodox explanation of what occurs, they also have invalid orders and so either way a catholic in good standing CANNOT recieve communion in a lutheran church, or in any protestant church for that matter.