Theme does not change with service or Node-Red

Hi everyone.

Is anyone else having a problem to change their theme?
I used to change my theme with Node-Red depending if the sun is up or not. This does not work anymore. Neither with the new light / dark mode nor with two different themes. But I can also not change the theme with a service. Am I the only one?

do you have your theme set to “backend-selected” in your user settings?

Yes it is set to backend-selected. Does at matter if it is set to automatac, light or dark?

I would think it should be auto but I’ve never changed it from that setting.

But I have a static theme set and I never programattically change it so my experience with it is limited.