The issue occurs under both xorg and wayland sessions.

Here is the journalctl output:

$ journalctl -b 1
Hint: You are currently not seeing messages from other users and the system.
      Users in groups 'adm', 'systemd-journal' can see all messages.
      Pass -q to turn off this notice.
-- Logs begin at Sun 2020-08-09 19:11:20 CEST, end at Mon 2020-10-26 08:12:31 CET. --
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties
                                           _onFocusChanged@resource:///org/gnome/shell/ui/closeDialog.js:135:9
                                           pushModal@resource:///org/gnome/shell/ui/main.js:549:18
                                           show@resource:///org/gnome/shell/ui/switcherPopup.js:103:19
                                           _startSwitcher@resource:///org/gnome/shell/ui/windowManager.js:2038:23
aug 09 19:11:20 esprimo gnome-shell[2534]: JS ERROR: TypeError: null has no properties