Fr. Carlo Rossini says the following:

Fr. Rossini is incorrect.
In the Liber Usualis, we find this:

We can see this in old books like this one:

Or this one:

Modern books also honor this:

Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”