Shattering projectiles does not work with attack ground

Whenever I try hitting a group of units with an English trebuchet using attack ground after I have developed shattering projectiles, there isn’t any area of effect damage. With or without shattering projectiles, the English trebuchet has the same area of effect, which makes the unique technology useless.

Hi @WiltedKnave701, This is a known issue. Closing this topic because it is a duplicate.