“x increased damage for 4 seconds if you have cast void orb recently” does not get applied if the auto-cast node for void orb (Abyssal Rush) is selected. Tested by speccing into it, walking around, waiting for a few casts and checking my Erasing Strike tooltip DPS, then un-speccing and holding down the cast button until a few had come and gone and checking the tooltip DPS. No other passive or gear change. the tooltip DPS for manually casting (with no other differences at all) was massive (I have two idols with this ability)
Have you tried actually hitting something and comparing damage? Could be only a visual bug.
General rule of thumb: never blindly trust the tooltip DPS, always test on dummies.
no but that wouldn’t account for the change in dps. there’s no reason the tooltip dps should recognize any difference between autocast and manual cast with the way these mechanics are worded (and, presumably, intended to work)
just a matter of waiting for the devs to test it and confirm