[Bug 1795084] Re: We're sorry; the installer crashed. After you close this window, we'll allow you to file a bug report using the integrated bug reporting tool. This will gather information about your system and your installation process. The details will be sent to our bug tracker and a developer will attend to the problem as soon as possible.

[Steve White]

What's more, this appears in a dialog whose "Close" button and close box widget is non-functional.
I don't know if there even is a bug reporting tool --- it certainly didn't *take* me to one.  
I looked for it, but no luck.

It is a very, very bad look.

See this from 2011. https://forums.linuxmint.com/viewtopic.php?t=86024

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https://bugs.launchpad.net/bugs/1795084

Title:
  We're sorry; the installer crashed. After you close this window, we'll
  allow you to file a bug report using the integrated bug reporting
  tool. This will gather information about your system and your
  installation process. The details will be sent to our bug tracker and
  a developer will attend to the problem as soon as possible.

Status in grub-installer package in Ubuntu:
  Confirmed

Bug description:
  We're sorry; the installer crashed. After you close this window, we'll
  allow you to file a bug report using the integrated bug reporting
  tool. This will gather information about your system and your
  installation process. The details will be sent to our bug tracker and
  a developer will attend to the problem as soon as possible.

  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: Fri Sep 28 18:38:33 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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