Error when chatting through transport.
This happened when I left conversation open and returned after several hours. There was probably a disconnection in the meantime. Trayicon was blinking and clicking it raised another window for the same conversation. Both windows had no new messages, but the old one was marked with asterisk and bold font.
Traceback (most recent call last):
File "/usr/share/gajim/src/message_window.py", line 734, in _on_notebook_switch_page
old_ctrl.set_control_active(False)
AttributeError: 'NoneType' object has no attribute 'set_control_active'