If I select a category (e.g, New, Unread which I have enabled) which has no unread topics the Filter control stops working, becoming completely unresponsive. I have to go back to the Communities page and start over.
Thanks for reporting this issue.
We have a fix for this in the upcoming release (version 1.0.1)
It should be available in a day or so.
Do let us know if you still encounter it after updating.
The bug has been squashed. Thanks for the quick fix!