Comment 9 for bug 1880570

I tried to install the update. I haven't done this before, so just to make sure I'm in the right state:

$ apt list gnome-shell-extension-ubuntu-dock -a
Listing... Done
gnome-shell-extension-ubuntu-dock/focal-proposed,focal-proposed,now 68ubuntu1~20.04.1 all [installed,automatic]
gnome-shell-extension-ubuntu-dock/focal,focal 67ubuntu20.04.5 all

This looks correct, right? I then triggered the bug again by removing all "Favorite" Applications, and switching to a Workspace without any applications. And the bug happened again:

$ journalctl -f

Jun 04 11:03:29 xyz boltd[2397]: power: setting force_power to OFF
Jun 04 11:03:29 xyz boltd[2397]: power: state changed: supported/off
Jun 04 11:03:29 xyz kernel: xhci_hcd 0000:3c:00.0: Refused to change power state, currently in D3
Jun 04 11:03:29 xyz gnome-shell[2002]: JS ERROR: TypeError: firstIcon is undefined
                                           _adjustIconSize@/<email address hidden>/dash.js:612:9
                                           _redisplay@/<email address hidden>/dash.js:841:14
                                           _runDeferredWork@resource:///org/gnome/shell/ui/main.js:689:31
                                           _runBeforeRedrawQueue@resource:///org/gnome/shell/ui/main.js:704:9
                                           _queueBeforeRedraw/<@resource:///org/gnome/shell/ui/main.js:713:13
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: Refused to change power state, currently in D3
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: Controller not ready at resume -19
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: PCI post-resume error -19!
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: HC died; cleaning up
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: remove, state 4
Jun 04 11:03:30 xyz kernel: usb usb4: USB disconnect, device number 1
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: USB bus 4 deregistered
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: remove, state 4
Jun 04 11:03:30 xyz kernel: usb usb3: USB disconnect, device number 1
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: Host halt failed, -19
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: Host not accessible, reset failed.
Jun 04 11:03:30 xyz kernel: xhci_hcd 0000:3c:00.0: USB bus 3 deregistered
Jun 04 11:03:30 xyz boltd[2397]: [da010000-0060-ThinkPad X1 Carbon ] removed (/sys/devices/pci0000:00/0000:00:1d.0/0000:06:00.0/0000:07:00.0/0000:08:00.0/domain0/0-0)
Jun 04 11:03:30 xyz boltd[2397]: [da010000-0060-ThinkPad X1 Carbon ] dbus: unexported
Jun 04 11:03:30 xyz boltd[2397]: [da010000-0060-domain0 ] disconnected from /sys/devices/pci0000:00/0000:00:1d.0/0000:06:00.0/0000:07:00.0/0000:08:00.0/domain0
Jun 04 11:03:30 xyz kernel: pci_bus 0000:07: Allocating resources