How can I completely hide objectives while aiming down sights (ADS)?

I already went to 0 opacity on HUD settings for Objectives while ADS but they are still visible.

The other settings let me hide all elements while ADS, but not the objectives.

I am not sure if this is a bug or an intentional feature, but please allow us to hide the objectives while aiming down sights, as they often obstruct the view and make it much harder to see enemies.