[wp-trac] [WordPress Trac] #64367: Upgrade to WordPress core 6.9 from 6.8.3 causes WooCommerce email failure?

[WordPress Trac]

#64367: Upgrade to WordPress core 6.9 from 6.8.3 causes WooCommerce email failure?
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 Reporter:  philipg100         |       Owner:  (none)
     Type:  defect (bug)       |      Status:  closed
 Priority:  normal             |   Milestone:
Component:  Mail               |     Version:  6.9
 Severity:  normal             |  Resolution:  duplicate
 Keywords:  reporter-feedback  |     Focuses:
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Comment (by philipg100):

 Okay implementing the code snippet you suggested has worked. HOWEVER -I'm
 not trying to be difficult here but I look after and manage upgrades for a
 significant number of WordPress sites. Am I really now expected to now
 implement this code snippet on EVERY site?. You say: "While it's possible
 some people have not yet noticed, the number of reports for this issue so
 far is quite low (less than half a dozen that I've seen)." That's the
 problem-people DON'T generally notice emails not working until their
 business falls through the floor and they start asking themselves: "why
 aren't I getting any more enquiries or leads? " Surely email functionality
 is CORE and crucial to the successful operation of a business website? I'm
 sorry but I find your response to this issue a bit on the 'complacent'
 side. I'm worried that you are now NOT going to fix this issue in a later
 release? Can you now give me some direction on what I should now be doing
 and the steps I should now be taking regarding upgrading WordPress core on
 my clients' sites? Should I wait for 6.9.1? or are you even going to fix
 this problem ?

 [https://www.365i.co.uk/blog/2025/12/02/wordpress-6-9-broke-3-plugins-
 fix/] have a look at this thread-there are also a number of problems
 associated with third-party plugins. I'm not sure what the protocol is
 here-is it down to the plugin developers to make their plugins compatible
 with 6.9? Please can you at least give me some suggestion as to how I
 should move forward with this
 Kind Regards
 Phil

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Ticket URL: <https://core.trac.wordpress.org/ticket/64367#comment:6>
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