system preferred language is Icelandic, ios14/15 display push notification by Icelandic, but ios16 display by English

  1. set system preferred language from English to Icelandic(which iOS not support, display English)
  2. ios14/15 display push notification by Icelandic, but ios16 display by English, not Icelandic.

same app, different display. push notification's Icelandic definition file is localizable.strings. Is there some other setting I miss?

system preferred language is Icelandic, ios14/15 display push notification by Icelandic, but ios16 display by English
 
 
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