[wp-trac] [WordPress Trac] #39775: wp_mail miss send Content-Type with boundary when array header does not have other custom headers

[WordPress Trac]

#39775: wp_mail miss send Content-Type with boundary when array header does not
have other custom headers
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 Reporter:  kn007         |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Mail          |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Changes (by swissspidy):

 * version:  trunk =>


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Ticket URL: <https://core.trac.wordpress.org/ticket/39775#comment:1>
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