Strangely, today the night mode seems to have suddenly gone. It is still there in the settings, and I haven't changed those, but the functionality has gone. There used to be a little icon on the right in that small top bar, this too isn't there any more. This is so no matter whether location services are turned on or off.
Does anyone else have similar experience and, more importantly, is there a solution?
This question, How to set automatic night mode in Ubuntu 20.04?, is already older, so doesn't address the problem.
 
    