[wp-trac] [WordPress Trac] #51592: Customizer: Create New Menu is Empty

[WordPress Trac]

#51592: Customizer: Create New Menu is Empty
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 Reporter:  boldgrid      |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  5.6
Component:  Customize     |     Version:  trunk
 Severity:  blocker       |  Resolution:
 Keywords:  needs-patch   |     Focuses:
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Comment (by Clorith):

 Spent some time digging, but couldn't find the root cause either yet, but
 some more details that have been found so far:

 The problem appears to be that the `wp.template` function never builds the
 menu selection markup, which is needed to make the markup which the jQuery
 selector later depends on when clicking to change ot the create menu
 screen.

 r41768 introduced a new menu creation flow, reverting back to just before
 this point, and feeding in jQuery 3.x and things still work as expected,
 so I wonder if it's something relating to this flow-change which isn't
 playing nicely with other related JS changes.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51592#comment:7>
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