[wp-trac] [WordPress Trac] #46997: Theme update links show in Customizer and don't work

[WordPress Trac]

#46997: Theme update links show in Customizer and don't work
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 Reporter:  desrosj       |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  5.2.1
Component:  Customize     |    Version:
 Severity:  normal        |   Keywords:  has-patch has-screenshots
  Focuses:  multisite     |
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 When using the Customizer on a multisite install and browsing themes, a
 link to update shows but produces a JavaScript error when clicked.

 `TypeError: wp.updates is undefined`

 Installing themes for multisite was officially disabled in [38887]. An
 update notice shows on the Theme Details view but the link is omitted. The
 same approach should be used here.

 Looks like the thumbnail preview
 [https://core.trac.wordpress.org/browser/tags/5.1.1/src/wp-
 includes/customize/class-wp-customize-theme-control.php#L92 checks that
 there is an update, but not for the presence of update information], so
 the link always shows.

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Ticket URL: <https://core.trac.wordpress.org/ticket/46997>
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