Possible bugged DEE / Vile Eruption ?

I’m leveling a Witch Hunter for a poisonbuild and i just maxed out
the entire DEE-line except Terrifying Gaze, and i’ve picked Focused Gaze
for that extra damage with 4sec CD allied.
But when i cast a DEE into the enemies, it seems like only the center explosion
of the DEE is affected by TG and none of the 6 extra projectiles from maxed Vile Eruption.

So this leads me to believe that either TG doesn’t affect VE’s projectiles AT ALL,
due to a bug, or its intended and maxing VE with a TG-build is a waste of 12 points.

The amount of damage that the VE-projectiles does compared to the TG-explosion
is next to nothing.