Hm, seems like my reply hasn't made it's way to the forum. No, I could not reproduce it - neither with INDI 1.9.0 nor with INDI 1.9.1.
I remember that I had temporarily the problem. But as far as I remember, the problem was that I compiled it against an older INDI version. As soon as I installed INDI 1.9.1 at least, the problem disappeared.
So I installed a fresh nightly build on a new linux image (I am using a VM) and the weather radio now refreshes fine.Try to install a fresh nightly build. It worked for me.
I just updated my STABLE version with a normal update/upgrade and was excited to see that all the INDI drivers were updated - including Cloudwatcher NG from version 1.5 to 1.6.
Now it's completely broken. It won't read any of the sensors. It loads up, sees my Cloudwatcher and gets the firmware version etc, but it wont read any of the sensors. I see that this new version can read the relative humidity - which is a feature of the newest version of Cloudwatcher, but not the previous versions, like I have (2020).
So now I am much worse off than before - and this is with just the STABLE version of KStars/INDI.