"English (GB)" language marks British spelling as wrong

Steps to reproduce

  • Open a sandbox vault.
  • Go to settings and change the language to “English (GB)”.
  • On separate lines type:
    • ‘uninitialised’
    • ‘uninitialized’

Did you follow the troubleshooting guide? [Y/N]

Y

Expected result

The British spelling “uninitialised” should be accepted.

Actual result

Obsidian allows the American spelling “uninitialized” but marks the British spelling “uninitialised” as incorrect despite the selected language being “English (GB)”.

Environment

SYSTEM INFO:
Obsidian version: v1.7.7
Installer version: v1.4.16
Operating system: Windows 10 Home 10.0.22631
Login status: not logged in
Language: en
Insider build toggle: off
Live preview: on
Base theme: adapt to system
Community theme: none
Snippets enabled: 0
Restricted mode: on

RECOMMENDATIONS:
none


Additional information

image

(I’m aware I can add this to my personal dictionary but this is more for the future.)