notification popup stuck

A notification popup from solaar (Mouse battery low/Wireless mouse is low on power) is orphaned on my screen after I removed the notification from the notification/calendar dropdown.

Clicking on the notification itself, or on the x button generates messages like this:

JS ERROR: TypeError: this.notification is null
vfunc_clicked@resource:///org/gnome/shell/ui/calendar.js:796:9

JS ERROR: TypeError: this.notification is null
vfunc_clicked@resource:///org/gnome/shell/ui/calendar.js:796:9

JS ERROR: TypeError: this.notification is null
vfunc_clicked@resource:///org/gnome/shell/ui/calendar.js:796:9

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: gnome-shell 43.1-0ubuntu1
ProcVersionSignature: Ubuntu 5.15.0-67.74-generic 5.15.85
Uname: Linux 5.15.0-67-generic x86_64
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 13 18:09:16 2023
DisplayManager: gdm3
InstallationDate: Installed on 2019-06-18 (1364 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
ProcEnviron:
 TERM=tmux-direct
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: mutter-common 43.0-1ubuntu4
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to kinetic on 2022-10-30 (134 days ago)