I'm assuming this is since the overlooking/privacy court case.
We have cameras and the blocking on the left hand side of the screenshot below is definitely new. It's been applied historically too.
I don't have any issue with it, it doesn't affect out security. And the window it's blocking out over next door always have blinds down (our similar window is obscured glass), so there never was any overlooking anyway.
Just wondering if anyone else is affected?