Hello,
I tested with and without ethereal arrows (passive node) to see the bonus damage and it does not work.
Without points in Ethereal arrows, average damage with Hail of arrows : 160-165 https://ibb.co/JdGBJgf
With 5 points in Ethereal arrows, average damage with Hail of arrows : 160-165 https://ibb.co/WGFzhyH
Tested with Hail of arrows mana cost: 61. And 5 points in Ethereal arrows. I should have 61 * 2.5 = 152% increased damage.
That is not the case.
a) Maybe this should be in the bug forum instead of the Rogue forum & b) 8.5 hours isn’t a particularly long time, I’m not sure what you’re expecting (other than a reply from the devs acknowledging the above). I’ve flagged the post asking the devs to move it to hte bug forum.