The new legendary channeling falling sword does not work with the second set bonus of “Seeds of sown gold”.
What it’s supposed to do: Whenever I stop channeling, the enemy should receive 30% of the damage I did while channeling.
But when the channeling stops - nothing happens.
Same thing happens with Tear of the Comet gem that is supposed to shoot arcane missiles while channeling… It does not activate during Thundering Slashes channeling.
Probably the new item has to be added to the code for channel skills.