GI shadow map bug

I've gotten this bug a few times now. When the camera changes during a mission introduction or when some element changes in front of you, every shadow in the player’s shadow cascade (?) turns pure black for a second and then returns to normal.

How:

> Start a mission
> Camera changes angle or zooms to show something
> Every shadow GI turns black
> Goes back to normal after 0.5 sec to 1 sec (or few frames)

> Sometimes, it happens while roaming with no camera changes.