In some rooms, topic can't be unexpanded.
Submitted by Gendre Sébastien
Link to original bug (#687324)
Description
In some Jabber rooms, the topic is shown in full and user can't unexpand it.
How to reproduce this bug: Connect to the room xmpp:jabberfr-bistrot@chat.jabberfr.org
Empathy ver: 3.4.2
Version: 3.4.x