[wp-trac] [WordPress Trac] #45340: German (formal) isn't working properly.

[WordPress Trac]

#45340: German (formal) isn't working properly.
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 Reporter:  mirkoschubert  |      Owner:  (none)
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  I18N           |    Version:  4.9.8
 Severity:  normal         |   Keywords:
  Focuses:                 |
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 Hi, I just discovered a possible bug:
 If you have installed WordPress 4.9.8 in English and try to install German
 (formal) at Preferences -> General -> Site Language afterwards the
 languages never changes from English. But German (formal) will be
 installed and in the same options »de_DE_« appears instead of »German
 (Sie)«.

 You can switch to »de_DE_« and actually get German (formal) - at least in
 the WordPress Core. In 3rd party plugins with the proper translation the
 language stays in English. My own plugin (minimal-contact-form) doesn't
 translates to German (formal) and the plugin »Loco Translate« reports »The
 language of this site is invalid locale« and stays in English as well. I
 didn't tested any other plugins which has this language yet - I have to
 find some first.

 I tested it with WordPress 4.9.8 and WordPress 5.0-beta4 (und beta3) -
 both with the same outcome. I even installed a fresh version of 4.9.8
 without any Plugins or additional themes, but it stays the same.

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Ticket URL: <https://core.trac.wordpress.org/ticket/45340>
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