Glowie Inside a Staircase

[Apparition]

Doing the mission "Disable the Syndicate Office" in Nova Praetoria from Clockwork A87952.  The last mission objective is: "Recover any Syndicate weapons."  I hear the glowie... but it's inside a staircase, and is unclickable.  It's the last objective so it's on the mission map, so to be sure I checked... and sure enough, the glowie is indeed inside a staircase, making the mission incompletable.

 

FWIW: Zone/Mission: P_Office_30_Layout_03_03 Position: [181.8 18.1 1625.4]