Assassination Rogue using BUG

Warcraft Logs
1

https://www.warcraftlogs.com/reports/89g4kVNnXLTrmhdG#fight=70&type=damage-done&source=449&pins=0%24Separate%24%23244F4B%24casts%240%240.0.0.Any%2494135338.0.0.Rogue%24true%240.0.0.Any%24false%24200806^0%24Separate%24%23909049%24auras-cast%240%240.0.0.Any%2494135338.0.0.Rogue%24true%240.0.0.Any%24false%24200803&translate=true

https://www.warcraftlogs.com/reports/zZX1LgyDC7FpRrWq#fight=116&type=damage-done&source=375&pins=0%24Separate%24%23244F4B%24casts%240%240.0.0.Any%2494135338.0.0.Rogue%24true%240.0.0.Any%24false%24200806^0%24Separate%24%23909049%24auras-cast%240%240.0.0.Any%2494135338.0.0.Rogue%24true%240.0.0.Any%24false%24200803&translate=true

This guy was using both T6 talents: Exsanguinate and Agonizing Poison. This is an obvious bug which increase DPS by about 20%. Please ban those who use this bug from ranking. Thanks!