[Bug 1795149] [NEW] Kubuntu 18.04 installer crash when setting partitions manually

[Hans Deragon]

Public bug reported:

Kubuntu 18.04 installer crash when setting partitions manually:

Traceback (most recent call last):
  File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/PartMan.py", line 453, in on_edit_clicked
    self.partman_edit_dialog(devpart, partition)
  File "/usr/lib/ubiquity/ubiquity/frontend/kde_components/PartMan.py", line 367, in partman_edit_dialog
    self.ctrlr.dbfilter.edit_partition(devpart, **edits)
  File "/usr/lib/ubiquity/plugins/ubi-partman.py", line 3286, in edit_partition
    assert self.current_question == 'partman/choose_partition'
AssertionError

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.6
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CasperVersion: 1.394
Date: Sat Sep 29 15:32:57 2018
InstallCmdLine: file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd quiet splash --- maybe-ubiquity
LiveMediaBuild: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
 LANGUAGE=
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug bionic kubuntu ubiquity-18.04.14.6

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https://bugs.launchpad.net/bugs/1795149

Title:
  Kubuntu 18.04 installer crash when setting partitions manually

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