The option is currently called "Display incoming events in the notification area", and you have to turn it off to get new chats to pop up.
It's not a very clear name for the option I think, but they are aware of this upstream, as can be read in the GNOME bug report.
The option is currently called "Display incoming events in the notification area", and you have to turn it off to get new chats to pop up.
It's not a very clear name for the option I think, but they are aware of this upstream, as can be read in the GNOME bug report.