Catfish fails to update database

From a fresh boot:

Start catfish - update database - allows for password to be entered, database updates.

From a fresh boot:

Run some command as sudo, for instance apt-get update

Now run catfish and update database - no password called for, catfish sits there until you kill it.

wolf@wily:~$ update
[sudo] password for wolf:
Hit http://archive.canonical.com wily InRelease
...
Fetched 25.3 MB in 29s (863 kB/s)
Reading package lists... Done
wolf@wily:~$ catfish

** (catfish.py:1991): WARNING **: Couldn't connect to accessibility bus: Failed to connect to socket /tmp/dbus-j2NhPoucsB: Connection refused

(catfish.py:1991): Gtk-WARNING **: /build/gtk+3.0-pIzeMy/gtk+3.0-3.16.7/./gtk/gtkwidget.c:8554: widget not within a GtkWindow

** (catfish.py:1991): CRITICAL **: atk_object_set_description: assertion 'ATK_IS_OBJECT (accessible)' failed
Traceback (most recent call last):
  File "/usr/share/catfish/catfish/CatfishWindow.py", line 693, in on_update_index_unlock_clicked
    self.updatedb_process.sendline(password)
UnboundLocalError: local variable 'password' referenced before assignment

(catfish.py:1991): Gdk-WARNING **: catfish.py: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: catfish 1.3.3-0ubuntu1
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Oct 19 21:31:05 2015
InstallationDate: Installed on 2015-10-01 (18 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20151001)
PackageArchitecture: all
SourcePackage: catfish
UpgradeStatus: No upgrade log present (probably fresh install)