Road Kill Quest Bug

Time: 1:31 am EST
Frequency: Twice
World name: Ultros
Character name: Nazli Harr
NPC name: N/A
Monster name: Tyranasaur
Class/Level: 51 BRD
Party or solo: Solo w/ Chocobo "Brynnea"
In-game time: 3:00pm ET
Area and coordinates: Dravania Forelands, Mourn
Steps:
1. Collect the Quest in Churning Mists called "Road Kill" to kill 3 archaeosaur.
2. Collect One star Bill hunts with Tyrannasaur as a marked bill
3. Ensure that Tyrannasaur has the Q icon on its nameplate.
4. Kill 2/2 Tyrannasaur and watch the Road Kill Quest and Hunt Bills Mark off the required kills.
<*Add more steps if necessary>

Connection Specs
- Type of internet connection/provider: Xfinity Comcast Hi-Speed
- Modem maker/model number: Xfinity Gateway Modem

Model Number of the PlayStation®3 You Are Using
- Model Number: N/A

Model Number of the PlayStation®4 You Are Using
- Model Number: Day 1 ps4

Model Number of the PlayStation®Vita You Are Using
- Model Number: n/a

Information About the Peripherals You Are Using
-Type: ps4 controller
-Maker: Dualshock 4


Extra info/analysis: I get the feeling here that the mobs in question share the same ID number on the back end which is what's likely causing this bug.

FYI: I decided not to kill the 3rd Tyrannasaur and left the quest progression on 2/3 kills.