[wp-trac] [WordPress Trac] #59736: Singular block template regression

[WordPress Trac]

#59736: Singular block template regression
--------------------------+-------------------------
 Reporter:  afragen       |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  high          |  Milestone:  6.4
Component:  Query         |    Version:
 Severity:  critical      |   Keywords:  needs-patch
  Focuses:                |
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 In
 https://github.com/wordpress/wordpress-
 develop/commit/5269bf66f47be1d608fd459b17764f775a04b4b9 a problem was
 ''fixed'' for getting singular block templates in the main query loop.

 In testing I’ve found a regression where a singular template doesn’t
 display its blocks. The simplest way to demonstrate this is

 1. create a new installation with WP 6.3.x and the `echo-knowledge-base`
 plugin.
 2. Activate the plugin and use the essential default choices to create a
 new knowledge base. You must select the KB Template and use a block theme.
 3. View any of the KB articles.
 4. Use CLI to update to current 6.4-RC
 5. View the KB article and see that there is no content displayed.

 @costdev did some great detective work and determined the above changeset
 introduced the regression.

 Pinging @flixos90

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Ticket URL: <https://core.trac.wordpress.org/ticket/59736>
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