[wp-trac] [WordPress Trac] #36450: alt attribute missing from site icon preview

[WordPress Trac]

#36450: alt attribute missing from site icon preview
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 Reporter:  TacoVerdo                  |      Owner:
     Type:  defect (bug)               |     Status:  new
 Priority:  normal                     |  Milestone:  Awaiting Review
Component:  Customize                  |    Version:  trunk
 Severity:  normal                     |   Keywords:
  Focuses:  accessibility, javascript  |
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 '''Problem description'''
 When adding a new site icon (favicon), in the preview step the content of
 the alt attribute is missing (see image Example_in_Chrome_inspector) from
 the image that shows the preview for the browser icon (see image
 preview_browser_icon). Looking at the source code of the page (see image
 Example_page_source), the correct alt tag is there, so it seems to be
 removed from the DOM at some point.

 While the alt attribute information seems to be removed, an empty height
 attribute is added in the DOM.

 '''Possible cause'''
 A possible cause is that JavaScript is wrongly changing the attributes.

 '''Steps to reproduce'''
 1. Open the Customizer
 2. Click 'Site identity'
 3. Click 'Select image' below 'Site icon'
 4. Select an image and click 'Select'
 5. You're now on the 'Crop image' page. On the right, you'll see two
 previews. The problem occurs for the first image on the right, just below
 the header 'As a browser icon'.

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Ticket URL: <https://core.trac.wordpress.org/ticket/36450>
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