@Dimitri: This ubuntu-translators list message might help explain:
https://lists.ubuntu.com/archives/ubuntu-translators/2020-April/007644.html
So yes, it's the installer which picks the locale for regional formats a bit arbitrarily. Basically a duplicate of bug #1747637 and/or bug #1763025.
@Dimitri: This ubuntu-translators list message might help explain:
https:/ /lists. ubuntu. com/archives/ ubuntu- translators/ 2020-April/ 007644. html
So yes, it's the installer which picks the locale for regional formats a bit arbitrarily. Basically a duplicate of bug #1747637 and/or bug #1763025.