I get a 5% "drop" of burdens when I am in "Destroy the Shield" section. Other fireteam members get a consistent 100% drop per enemy. Despite several weapon types including the Scorch Cannon from the NPC enemy.... I cannot guarantee burdens to advance the cause and can be a hindrance. Thus, I am required to hide to stay alive while fire team members blast away and progress.
This has been an identified issue for eight months now maybe. Just thought it'd self-resolve. Requesting assistance please.