[wp-trac] [WordPress Trac] #57644: Do not show language spinner if dropdown has been removed

[WordPress Trac]

#57644: Do not show language spinner if dropdown has been removed
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 Reporter:  swissspidy    |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Future Release
Component:  I18N          |    Version:
 Severity:  minor         |   Keywords:  has-patch
  Focuses:                |
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 Noticed after working on #38664.

 Core contains some code to display a spinner next to the submit button
 when selecting a language from the dropdown that has first to be
 installed. However, it does not check whether the dropdown does actually
 exist on the page, as some plugins do remove it & replace it with a custom
 solution.

 We should prevent displaying a spinner in such cases as it's misleading.
 Plugins themselves can't do that because the JS is not easy to remove.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57644>
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