Firstly, this is a Gnome change, not Fedora but I run Fedora 27. Gnome has decided to drop the status icon drawer and it has broken my access to the GUI. As far as I can tell ownCloud is still operating in the background syncing my files and the like.
There is a work around extension that moves all status icons to the Top Bar however ownCloud has ceased to open that way either, I can see the icon on the top bar but I have no access. I have done everything I can possibly think of and (obviously) I can't find a solution. The icon nor the application overall will respond any longer.
I'm out of ideas and I can't find any information in any release after 2.3.3 that seems to indicate a fix.
ownCloud 2.3.3 (Fedora hasn't pushed 2.3.4 yet for some reason?)