Stadia controller Bluetooth problem on Nvidia Shield TV Pro

https://stadia.google.com/controller/

I have played GfN wired with a Stadia controller to a Nvidia Shield TV Pro the last month, and today I changed one of my controllers to Bluetooth with the tool.

It connects fine, and I can use it.

When I turn the controller off and then on again, it connects. However, I am not able to use the controller even though the light on it turns white and the Shield says it is still connected.

To get it working again I have to disconnect it from the Shield and then pair it again.

Does anyonehave any thoughts on this issue? 🤔

Edit: nocturno65 has found a solution, se below.