kazam crashed with AttributeError in cb_button_press_event(): 'NoneType' object has no attribute 'force_update'

[Barabazon]

When you select a window, the application does not see the Windows and gives an error

ProblemType: Crash
DistroRelease: Ubuntu 19.10
Package: kazam 1.4.5-3
ProcVersionSignature: Ubuntu 5.3.0-13.14-generic 5.3.0
Uname: Linux 5.3.0-13-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct 1 15:19:50 2019
ExecutablePath: /usr/bin/kazam
InstallationDate: Installed on 2019-09-28 (2 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Beta amd64 (20190926.1)
InterpreterPath: /usr/bin/python3.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/bin/kazam
ProcEnviron:
 LANG=ru_RU.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
Python3Details: /usr/bin/python3.7, Python 3.7.4+, python3-minimal, 3.7.3-1
PythonArgs: ['/usr/bin/kazam']
PythonDetails: /usr/bin/python2.7, Python 2.7.16+, python-minimal, 2.7.16-1
SourcePackage: kazam
Title: kazam crashed with AttributeError in cb_button_press_event(): 'NoneType' object has no attribute 'force_update'
Traceback:
 Traceback (most recent call last):
   File "/usr/lib/python3/dist-packages/kazam/frontend/window_select.py", line 111, in cb_button_press_event
     screen.force_update()
 AttributeError: 'NoneType' object has no attribute 'force_update'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.