Honestly, this is probably intentional ... Bungie loves to ruin our fun; it's their company motto.

try breaking line of sight after placing a decoy... i get its frustrating but it also stops you from spamming clones, think of it as a way to introduce challenge given how free everything is with prismatic now : ) good luck with your solo run <3

Honestly, that's so relatable. It should also go back to spawning threadlings when destroyed in PVE only. Not PVP.

They also need to remove the nerf they made to the decoy where it doesn't spawn threadlings if destroyed by attacks. There is no reason for this nerf other than for PvP because people complained about it in there. As a result, Bungie ruined the ability as it's roll is to be a decoy that then punishes enemies for both getting too close or destroying it with Threadlings. Now, it's not even worth that and it barely even draws aggro from enemies.