Ubuntu Ubiquity Installer sets wrong language locale based on set time zone

[Tony Thuitai]

The Ubuntu Installer sets the wrong language locale when some timezones are set/automatically set for example when I set the language to English and set the timezone to Nairobi (Kenya) GMT+3, the locale that is set by the installer is not an English locale but a non-English one which is Oromo-KE instead of English US or English UK based on keyboard layout chosen in installation. Correction of the error after installation is possible on Gnome graphically but requires the terminal to properly correct it in KDE and XFCE.

I request a change to the installer to solve this issue which is to allow users to set a type of the main Language selected for example when English is selected at the start of installation, the next step before setting the keyboard layout should be the English type, for example, English-UK, English-US and others so that the correct language locale is set. An example of the change is the System76 Pop OS installer and the calameres installer.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 27 09:53:50 2020
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
InstallationDate: Installed on 2020-04-27 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: ubiquity
Symptom: installer
UpgradeStatus: No upgrade log present (probably fresh install)