PotD Timeworn Artifacts not dropping for second class

Put one class through PotD runs to get Timeworn Artifacts (at the same time as helping a friend levelling). Got 15 handed in and got weapon. Took the quest again with another class. No drops at all in at least 6 x 51-100 runs. Appreciate it's a low drop rate, however other people I've talked to in there also experiencing a complete no show on second classes.


Date & Time: Ongoing
Frequency: 100% of not happening
World name: Louisoix
Character name: Tera Luna
Retainer name: n/a
NPC name: n/a
Monster name: n/a
Class/Level: whm/80
Party or solo: random parties in PotD
In-game time: every PotD run
Area and coordinates: PotD