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