It's actually not a bug if you listen to what she's telling you as you're going through the storyline she says there is only death in light at the end of the mission they want you to -blam!- so yes you either have to -blam!- with a rocket launcher jump off the edge where it tells you to turn back all the sudden boom right into where you need to be pay attention to the storyline

and in 2024, I just got stuck

DA,MIT 12/16/2023 AND i HADS A ROCKET LAUNCHER, GUESS HAVE TO ACCEPT DEATHS TO COMPLETE THIS... ONLY BEEN PLAYING 3 MONTHS AND TRYING TO COMPLETE OLD MISSIONS

Here viewing the thread 10/25/2023 because of this bug... Had to restart with a rocket launcher equipped, because why not, right? There isn't even a ledge high enough to jump from! Now stuck after killing Crota. So much for the "New Light Experience," it took repeating the Rocket at Feet strategy and occasionally restarting to allow me to finish the exact same Lost Sector as FOTL content. That's kinda fun. Too bad the "Insufficient Firewall Data Fragments" vaulted content error still blocks the door I've wanted to explore since visiting this Lost Sector years ago.