Based on my experience, this is far more common with those priests using the traditional form of absolution than those using the newer form. I’m guessing a part of that is probably that the traditional form is a bit longer than the ordinary form.
(Traditional form recited in Latin)
“May Almighty God have mercy on thee, forgive thee thy sins, and bring thee to everlasting life. Amen.”
“May the almighty and merciful Lord grant thee pardon, absolution and remission of thy sins.
“May Our Lord Jesus Christ absolve thee, and I by His authority do absolve thee from every bond of excommunication, or interdict (or suspension) as far as I am able and thou art needful.
“I absolve thee from thy sins in the name of the Father and of the Son and of the Holy Ghost.
“May the Passion of Our Lord Jesus Christ, the merits of the Blessed Virgin Mary and of all the Saints, whatever good thou shalt have done or evil endured, be for thee unto the remission of thy sins, the increase of grace, and the reward of everlasting life. Amen.”