[wp-trac] [WordPress Trac] #50702: Invalid tabindex in screen-reader-shortcut

[WordPress Trac]

#50702: Invalid tabindex in screen-reader-shortcut
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 Reporter:               |      Owner:  (none)
  erikjandelange         |
     Type:  defect       |     Status:  new
  (bug)                  |
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  General      |    Version:  5.4.2
 Severity:  normal       |   Keywords:  accessibility tabindex screen-
  Focuses:               |  reader
  accessibility          |
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 I'm trying to update a website to be 100% accessible. Till so far the bugs
 in the theme are solved but now i have (according to Google Chrome -
 Lighthouse) an bug in the tabindex of the screen reader shortcut.

 In line `451` of the file `wp-includes/class-wp-admin-bar.php` there is a
 tabindex set to 1. Which isn't allowed.

 The confusing part, that the code is valid, but Lighthouse marks it as
 invalid because users can expirience an abnormal behaviour of the tab
 walk-through.

 The message Lighthouse returns is:

 > Some elements have a [tabindex] value greater than 0
 > A value greater than 0 implies an explicit navigation ordering. Although
 technically valid, this often creates frustrating experiences for users
 who rely on assistive technologies. Learn more.

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Ticket URL: <https://core.trac.wordpress.org/ticket/50702>
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