Solar Intensity on 3rd party apps

Because there is no beta forum for the Instinct 3 yet and I don't have a physical device, I have to ask here:
Does the solar intensity data field on third-party watch faces work for you? Can anyone test this? (e.g. on watchfaces like Glance, Horizon ...etc)

I get occasional reports from Instinct 3 users where it doesn't work but it does on the stock watchfaces.
Since it is the same code as the Instinct 2 (in my case), I suspect a problem with the firmware: 6.28

Thanks for your help!