In "Help" menu item only "About" item works. "Get online help", "Report a problem" and "Translate this application" do nothing.
I confirm this bu in gwibber 2.0.0~bzr401
A specific bug report about "Report a Problem" link can be found in bug #384552 at https://bugs.launchpad.net/gwibber/+bug/384552. FYI
This bug is fixed in gwibber 2.29.94 now you are directed to launchpad when you report the bug.
Bug watches keep track of this bug in other bug trackers.
I confirm this bu in gwibber 2.0.0~bzr401