"ubi-partman crashed" when attempting to restart a failed installation of Kubuntu

[Adam Vest]

Hello,

I was attempting to restart the installation process from the desktop I was dropped to after a failed installation attempt, and I get an error message window reporting "ubi-partman crashed". Clicking retry has the window pop up again almost immediately, with the following logged to syslog:
---
Nov 18 21:51:23 kubuntu ubiquity[28179]: dbfilter_handle_status: answer 524288
Nov 18 21:51:23 kubuntu activate-dmraid: No Serial ATA RAID disks detected
Nov 18 21:51:23 kubuntu ubiquity: umount: /target: target is busy.
Nov 18 21:51:23 kubuntu ubiquity[28179]: debconffilter_done: ubi-partman (current: ubi-partman)
Nov 18 21:51:23 kubuntu ubiquity[28179]: dbfilter_handle_status: ('ubi-partman', 10)
---
Clicking ignore moves me along to asking for my timezone, and after that it takes me to the installer slideshow, where it appears to simply be doing nothing (no progress bars, no system activity that I could find). Full logs from "ubuntu-bug ubiquity" should be attached.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubiquity 22.04.18
ProcVersionSignature: Ubuntu 5.15.0-54.60-generic 5.15.74
Uname: Linux 5.15.0-54-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.2
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.470.1
CurrentDesktop: KDE
Date: Fri Nov 18 16:45:46 2022
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/kubuntu.seed maybe-ubiquity quiet splash ---
LiveMediaBuild: Kubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20221118)
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Adam Vest (foxmulder2004)]

A screenshot of the crash, if it could be deemed useful.

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
https://iso.qa.ubuntu.com/qatracker/reports/bugs/1997120