[wp-trac] [WordPress Trac] #59847: Since WordPress 6.4, the functions.php of a theme moved to a different location using register_theme_directory is no longer called

[WordPress Trac]

#59847: Since WordPress 6.4, the functions.php of a theme moved to a different
location using register_theme_directory is no longer called
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 Reporter:  partyfrikadelle  |       Owner:  joemcgill
     Type:  defect (bug)     |      Status:  reviewing
 Priority:  normal           |   Milestone:  Awaiting Review
Component:  Bootstrap/Load   |     Version:  6.4
 Severity:  critical         |  Resolution:
 Keywords:                   |     Focuses:  template, performance
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Comment (by partyfrikadelle):

 Replying to [comment:8 coreyw]:
 > Edit: in my case I also need to add `add_filter('theme_root', fn (string
 $value): string => $value);` while registering the custom directory for it
 to work.

 Interesting. Got it working on my Development-Site for our Multisite
 Project too, but also had to add a theme_root-filter. Even if i add the
 register_theme_directory-Call as the first Call in the mu-plugins i have
 to add the filter.

 I have no idea at the moment what could call get_stylesheet_directory or
 get_template_directory before that.

 I'll give it another look tomorrow. Its getting late in germany.

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Ticket URL: <https://core.trac.wordpress.org/ticket/59847#comment:11>
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