Time: Since 4.0 release

Context: Legendary flame blitz causing eternal proc to buff fiery spike damage.

Expected: Legendary flame blitz shouldn't cause eternal proc to buff fiery spike damage.

Observed: I was testing legendary abilities on my dimension then realized weird damage difference on fiery spike, tracked to cause and noticed fiery spikes generated by legendary flame blitz are getting buffed by eternal weapon proc meanwhile they shouldn't because of being damage over time ability.

Repro steps:
1) Cast legendary flame blitz on target while having eternal proc and check the fiery spike's damage and note it down.
2) Cast fiery spike while having eternal proc manually 5x times and note it's damage down.
3) Cast legendary flame blitz on target while not having eternal proc and check the fiery spike's damage and note it down.
4) Cast fiery spike while not having eternal proc manually 5x times and note it's damage down.
5) Notice that all damage are same except the first step.

Video: Here is a short video showing legendary flame blitz buffing damage of fiery spike.