So Bright Monitoring has stopped working since the update to firmware 2.0 on my Sony A7III
(If you don't know Bright Monitoring, it's a feature you can assign to a custom button that streams the live view at the highest ISO and shutter speed of 1/4 secs so you can compose in the dark. As an astrophotographer, it's really useful).
The camera recognises that I'm pressing the Bright Monitoring custom key because when I go into the menu I cannot change the "Live View Display: Setting Effect OFF" because it says "This operation or setting not available as follows: Bright Monitoring ON"
However, the Live View no longer shows the Bright Monitoring. It doesn't change at all, just stays dark.
Has anyone else noticed this? Or have any suggested fixes?