TYPO3 Core

According to my quick conversation with Benni Mack on the issue, the buildup of language menu dropdowns as well as the column arrangement in the BE should be given by the structure of the site modules config.yaml. In the prior to 9.x TYPO3 version, the sort order of dorpdowns and language columns was based upon the title. Currently it would appear that the sorting is based upon 'languageId'

Please see attached screenshots.

Example from config.yaml

languages:
  -
    title: de_DE
    enabled: true
    languageId: '0'
    base: /de_DE/
    typo3Language: de
    locale: de_DE
    iso-639-1: de
    navigationTitle: Deutsch
    hreflang: de-DE
    direction: ltr
    flag: de
  -
    title: de_AT
    enabled: true
    languageId: '19'
    base: /de_AT/
    typo3Language: de
    locale: de_AT
    iso-639-1: de
    navigationTitle: German
    hreflang: de-AT
    direction: ltr
    fallbackType: fallback
    fallbacks: '0'
    flag: at
  -
    title: de_LU
    enabled: true
    languageId: '7'
    base: /de_LU/
    typo3Language: de
    locale: de_LU
    iso-639-1: de
    navigationTitle: ''
    hreflang: ''
    direction: ''
    fallbackType: strict
    flag: lu

Based upon the above example, the current resulting order is:

de_DE
de_LU
de_AT

whereas the desired results would become: (if sorted by title)

de_AT
de_DE
de_LU