@ter It doesn't work properly. While in dark mode, most locations seem to be randomised and some don't show anything at all. I found pictures from Driebergen in Rotterdam, and from Nijmegen in Polder Wieldrecht. Some locations do show the right pictures, but as far as I can see it's completely random. It's still all correct while in light mode.
You'll see there are too many examples to name them all. There should also be a clear difference between dark mode and energy saving mode, dark mode should be identical in functions to the light mode site.
I'm on desktop right now but the site seems to be in energy saving mode automatically, the entire site is dark mode and my personal map doesn't show every spot. I can't find anything in the settings either.