[wp-trac] [WordPress Trac] #51049: WordPress 5.5 - Menu not working

[WordPress Trac]

#51049: WordPress 5.5 - Menu not working
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 Reporter:  emilieallegranti  |      Owner:  (none)
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  Awaiting Review
Component:  General           |    Version:  5.5
 Severity:  major             |   Keywords:
  Focuses:                    |
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 Hi,
 I upgraded my website to wordpress 5.5 yesterday, and now the header Menu
 didn't work. I lost all the elements to navigate in the menu.
 The back office seems ok with all the information; but not visible on
 front office.
 I don't know how to fix it.
 Same problem on my 2 websites :

 https://www.iespm.fr/
 https://www.bfblab.com/

 Please help me,

 Emilie

 As well as the slider (Slider by 10Web) on home page. The slider is not
 working.

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Ticket URL: <https://core.trac.wordpress.org/ticket/51049>
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