[Bug 2033136] [NEW] Not immediately clear what's wronng in "manual partitioning" dialog when mount point is not set

[Leon]

Public bug reported:

The manual partitioning dialog permits allocating an ext4 partition without a mount point.
As a result, the "Next" button is greyed out and it is not immediately clear what's wrong.

Also: after setting a mount point, it is impossible to unset it.

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 05:13:47 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)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug mantic

** Attachment added: "Screenshot from 2023-08-26 05-13-33.png"
   https://bugs.launchpad.net/bugs/2033136/+attachment/5695130/+files/Screenshot%20from%202023-08-26%2005-13-33.png

** Attachment removed: "UbiquitySyslog.txt"
   https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/2033136/+attachment/5695133/+files/UbiquitySyslog.txt

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https://bugs.launchpad.net/bugs/2033136

Title:
  Not immediately clear what's wronng in "manual partitioning" dialog
  when mount point is not set

Status in ubiquity package in Ubuntu:
  New

Bug description:
  The manual partitioning dialog permits allocating an ext4 partition without a mount point.
  As a result, the "Next" button is greyed out and it is not immediately clear what's wrong.

  Also: after setting a mount point, it is impossible to unset it.

  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 05:13:47 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)

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