Additional camera has black surround when using steamvr

Hi, I have a steam vr project where I have added an extra camera (set to main display), to show on the desktop screen. I have done this before and it has worked fine, however with the beta 3 version it shows a black surround, of which I do not know how to get rid of. Does anyone know how to fix this?

thanks

Hi hasseyg,
Thanks for reporting this issue. It’s a known bug and has already been fixed internally. The fix should be available in one of the next beta releases.