Weight of the World - Bugged - Progression blocked

[Sinifair.1026]

In the Story Mission "Weight of The World" when you get to the part with the Deluxe Jade Tracker, a laser cannon is supposed to spawn as well, which you'll use to get rid of the shields over some batteries in the main hall.
After giving up one evening to come back and try it later, I today found myself stuck at this point again.

After checking the wiki and watching a guide video up to that point, I can now confirm that the laser that is needed to progress does not spawn for me.

I'll try the repair GW2 and see if that'll fix it, but I thought it best to alert the guards anyway.