Cannot Select the Landmark

I am based in the city of Copenhagen and I cannot select the landmark "Town Hall".

The only workaround is to select the city and then switch to the landmark in that window.

The issue seems to be resolved, as I can now select the landmark as per normal.

Nope, I spoke too soon. It's gone again, the landmark can't be selected.

Refreshing the browser doesn't fix it, neither does closing the browser down and re-opening it again.