September 4th, 2019 at 11:00 AM (-7:00 UTC)

After some testing, I have concluded Shadow Hunter's Arrow of the Goddess ability contains a bug: if a Mark is placed upon the Target by either Shadow Whispers or Arrow of the Goddess, the Arrow of the Goddess's strike will deal only the exploded Mark's damage - not its own damage and the explosion combined.

Current Work-Around:
Be a good distance away from the Target, about 15 blocks or further, before striking with Arrow of the Goddess.