Sorry if this has been reported, hadn't noticed.
Not so much a bug but one that makes alliance pages unreachable. currently playing UK1 but assume it would affect others too.
If you set your alliance forum tab as your favourite, should you click on any other alliance page that does not have a public forum you get the message 'There is still no forum created'; From there you are unable to view the description or members list of that alliance.
Only way to regain access to the description or members list is to change your alliance tab favourite to any of the others which does not affect it.