Why is a community still in my Favourites after I have left?

You can add communities to your Favourites list, by clicking the Favourites icon on the community homepage, giving you quick and easy access to them.

Currently there is a known issue, in which a community stays in the Favourites list after you have left, as shown below:

If a community remains in the list after you have left, you can clear the community from the list by hovering over the community and clicking the x.