If you're making a Fighter with Tempest technique and have a way to make a ranged attack the bonus to attack does not apply. Now, this is probably an error caused by how by the rules the bonus to damage doesn't apply to ranged attacks, just melee and close ones But the attack bonus specifically is just "+1 Bonus to weapon attack roll with weapons that have the offhand property." Nothing about having to be melee or ranged.
Test character is L4 Fighter, with 2 daggers equipped, with feats:
1 - any
2 - Warrior of the Wild
4 - Novice Power
and using Retraining tab to swap the Fighter E1 with Ranger power "Hindering Shot", then checking the attack bonus calculation on Hindering Shot.
Bonus is specifically
And adding this:
Does not grant the bonus.
Test character is L4 Fighter, with 2 daggers equipped, with feats: 1 - any 2 - Warrior of the Wild 4 - Novice Power and using Retraining tab to swap the Fighter E1 with Ranger power "Hindering Shot", then checking the attack bonus calculation on Hindering Shot.