GUI is not updated if new USB device is plugged/unplugged/attached

[abbluiz]

Qubes OS version:

R4.0 with current-testing repo enabled

Affected component(s) or functionality:

Qubes Devices, sys-usb GUI

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Steps to reproduce the behavior:

I open the USB tray and attach a device to a qube; I plug/unplug an USB device to/from my computer

Expected or desired behavior:

If I attach a device, it should display an option to detach it and if I plug/unplug a device to/from my computer, the list should be updated

Actual behavior:

The tray is not updated if I plug or remove another USB device, and if I attach an available device to a qube, there is no way to detach it through the tray because the GUI is not updated. I would have to do so by typing qvm-block detach command

General notes:

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I have consulted the following relevant documentation:

I am aware of the following related, non-duplicate issues:

[andrewdavidwong]

Duplicate of #4849

[andrewdavidwong]

This appears to be a duplicate of an existing issue. If so, please comment on the appropriate existing issue instead. If you believe this is not really a duplicate, please leave a comment briefly explaining why. We'll be happy to take another look and, if appropriate, reopen this issue. Thank you.