I was playing a Glaceon GX deck, my opponent had two Stakatakas GX out, one of the Stakas had 150 damage on it, I used Frost Bullet and the damage was reduced to 70 in the active and to 10 to the Staka I selected on the bench, even though Glaceon was supposed to block abilities, there were no effects in play that would prevent the ability lock.
I include part of the game log, didn't include everything because it was very long, this happened late in the game, but you can clearly see that Glaceon was active and the damage shouldn't have been reduced.
245. Glaceon-GX became xXTheStalkXx's new Active Pokémon.
246. xXTheStalkXx's Glaceon-GX used its Frost Bullet attack.
247. xXTheStalkXx's Glaceon-GX used Frost Bullet and did 70 damage to mandil21's Celesteela.
248. xXTheStalkXx's Glaceon-GX used Frost Bullet and did 10 damage to mandil21's Stakataka-GX.