In "install alongside" dialog, the "advanced partitioning tool" link doesn't do anything

The dialog (attached) says:

> 2 smaller partitions are hidden, use the advanced partitioning tool for more control

but clicking on it has no effect - you stay on the same screen.

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 6.3.0-7.7-generic 6.3.5
Uname: Linux 6.3.0-7-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.27.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.482
CurrentDesktop: ubuntu:GNOME
Date: Sat Aug 26 04:56:23 2023
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz layerfs-path=standard.live.squashfs --- quiet splash
LiveMediaBuild: Ubuntu 23.10 "Mantic Minotaur" - Daily amd64 (20230825)
ProcEnviron:
 LANG=C.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)