ubiquity installer crashes after time zone choice

installing Ubuntu 22.10 on ThinkPad T14s G3 AMD following luks preparation on
https://mutschler.dev/linux/ubuntu-btrfs-20-04/
the installer crashed after pressing continue on the time zone dialog (last paragraph of Step 4 of the tutorial).

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: ubiquity 22.10.10 [modified: lib/partman/fstab.d/btrfs lib/partman/mount.d/70btrfs]
ProcVersionSignature: Ubuntu 5.19.0-21.21-generic 5.19.7
Uname: Linux 5.19.0-21-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.475
Date: Wed Dec 21 00:17:45 2022
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)