I'm not sure I'm filing this bug where it belongs; feel free to move it if not.

There was yesterday an enormous update (more than 10700 packages) to
Tumbleweed. Before then, when I logged into X, PackageKit ran for some minutes
and then stopped, so I could (once it had stopped) run zypper in a konsole
terminal.

After rebooting from this enormous update, PackageKit runs forever (or at least
for hours) whenever I log into X, so I cannot anymore run zypper in konsole
because PackageKit is locking the library.

Temporary solution:
1. Log out of X and log in to a text console
2. Wait a few seconds and make sure that process "Zypp-main" has gone away.
3. zypper rm PackageKit (written in CamelCase; and answer yes when it asks for
confirmation)
4. Log back into X.
Now that PackageKit has been uninstalled, it won't misbehave.

P.S. "Tumbleweed 20220831" comes from the greeting I get now in text consoles,
inviting me to log in.