[wp-trac] [WordPress Trac] #40282: header_image hook doesn't update get_theme_mods()

[WordPress Trac]

#40282: header_image hook doesn't update get_theme_mods()
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 Reporter:  strarsis      |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Themes        |    Version:  4.7.3
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Related: [WordPress WP Display Header
 plugin](https://wordpress.org/plugins/wp-display-header/)

 The current header image is modified using the
 '''theme_mod_header_image''' hook.
 However, in '''get_header_image_tag(...)''' the function
 '''get_custom_header()''' returns the default header data (including the
 non-updated URLs) while '''get_header_image()''' correctly returns the new
 header image URL.

 Using '''wp_calculate_image_srcset(...)''' with the correctly returned new
 URL as '''$image_src''' argument but with the non-updated
 '''$image_meta''' from '''get_custom_header()''' no sizes/srcset
 attributes are rendered at all - just the img element with src to the full
 resolution image file URL.

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Ticket URL: <https://core.trac.wordpress.org/ticket/40282>
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