I recently started the dead orbit quest. Had the quest about halfway complete and the quest no longer continued to rank, or receive progress. I've tried wearing every piece of gear with dead orbit, and still nothing. I tried abandoning the quest, all that did was reset the bounty. Now it receives no experience or progress while wearing the required shader, emblem, and mark. I've tried searching videos and other posts and it only pertains to the issue where it couldn't be turned in before ttk dropped. Any suggestions? EDIT: The Titan mark I was wearing was indeed a spektar mark. Re-purchased a base mark from Dead Orbit vendor and the quest resumed. Confirmed that spektar items are indeed bugged. Thank you for the help.