Comment 19 for bug 1683653

[Impact]

Opening download folder from Firefox results in
UI freeze for the whole session. Some keyboard
shortcuts might still work, but mouse doesn't.
Need to kill Firefox to unfreeze the system.

The patch attached to this report fixes the issue.

The fix is already present in Artful and tested by
developers and users. Would be nice to backport it
to Zesty as well, as the whole session freeze is
quite a bad thing (even though you can stop it).

[Test Case]

Steps to reproduce:
- have a terminal running
- run Firefox
- download some file from somewhere
- click on download button to show the file list
- click on "open containing folder" button

Most UI apps will freeze after that.
As Alt-Tab shortcut still works, use it to switch
to terminal and run "killall firefox".

[Regression Potential]

None. The UI freeze *is* the regression. The patch
restores the missing DBus interface initialization
and affects nothing else.

[Other Info]

The patch is included into the debdiff attached to
bug 1680604.

The debdiff contains patches to fix bug 1680604,
bug 1683653, bug 1688687. See other reports for the
corresponding SRU templates.