'Does 10 damage to each of your opponent's benched pokemon' is not working

1BJK903

Used this Eiscue, twice. The blizzard attacks states that it should do 10 HP damage on each of my opponent's benched mons.

It does not seem to work. Is it a bug?

TechHog

Double Turbo Energy reduces your damage to each Pokémon by 20, so you do 0 to the bench in this case.

Also that is a terrible card and attack...