Tonberry King boss reset after 7-10% of DMG done?

Just did a WP run in the Duty Roulette and we got to the last boss and after we engaged and did about 7-10% DMG it reset like we had just crossed the zone line again.

Greetings,

I am sorry to hear you are having trouble with a possible system error. This matter has already been brought to our attention and is currently under investigation by development. I recommend checking Here or Here for any updates in the future!

- Furlamseere