NPC Spawn Issue: Argyn Shieldstan (Qeynos Aquadut) should be on 7 min respawn

[Jimjam]

I popped into Qeynos Sewers and killed the pathing level 30 warrior, Argyn Shieldstan that patrols outside the Bertox guild.

16 minutes later I noticed he hadn't respawned.

I levelled my shaman on this guy on live and he should be on a 7 minute respawn and should spawn every time. For veracity I will take a look on live to see his 'current' respawn time. 20 minutes and still no pop on p1999.