'Toggle Foreground Blur' not working?

Hi,
When I’m in drone mode, I’m not able to make the forground blur and the backround sharp, only the opposite. If I press on Ctrl+F1 (Toggle Foreground Blur) nothing happens. What I’m doing wrong?

RTX 3060

Thanks…

Hello,
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This hasn’t been working for me for over a year, no plan to fix this bug yet?