[wp-trac] [WordPress Trac] #49457: wp-admin javascript issues after update to 5.3.2

[WordPress Trac]

#49457: wp-admin javascript issues after update to 5.3.2
----------------------------+--------------------------------------
 Reporter:  pegla           |      Owner:  (none)
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Administration  |    Version:  5.3.2
 Severity:  blocker         |   Keywords:  needs-patch dev-feedback
  Focuses:                  |
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 Hi,
 I believe there's an issue with media-library/theme customizer
 specifically with 2 files on lines (I turned on script debugger and these
 are unminified files):

 **- line 207 in media-audiovideo.js**
 ''Uncaught TypeError: wp.media.collection is not a constructor''

 {{{
 wp.media.playlist = new wp.media.collection({
 }}}


 **- line 602 in media-grid.js**


 ''Uncaught TypeError: Cannot read property ‘extend’ of undefined''


 {{{
 Details = EditImage.extend(/** @lends
 wp.media.view.EditImage.Details.prototype */{
 // ....

 }}}


 I initially thought this as theme error or server error but my guys from
 Mochahost said all is good on their end specially since this is Javascript
 error. And I did fresh wordpress install and update - 0 plugins 0 themes
 it still happens. Also tried different browsers, Firefox, IE, Edge and
 Chrome...

 I tried some javascript hacking did some workarounds - but none of it
 worth mentioning - except from debugging I found out that:
 'collection' doesn't exist on wp.media at all and even when I wrapped it
 in setTimeout for few seconds it's still wasn't there. I also tried
 accessing objects directly from
 window.wp.media/window.wp.media.view.EditImage -> no luck there
 I'm not good with backbone and these files are webpack build so it's bit
 hard to figure out what's wrong.

 I filed a support questions here:
 https://wordpress.org/support/topic/media-library-not-working-26/
 https://wordpress.org/support/topic/wordpress-5-3-2-javascript-errors/

 I'm using PHP 7.3 and I tried with 5.6 same thing happens - fix for now
 would be to downgrade to WordPress 5.2.5 where it also happens but media
 library and appearance/customizer seem to work fine with this error:
 ''Uncaught TypeError: wp.media.collection is not a constructor''

 Main issue is that this is happening when I update my websites - and it's
 on all of them. I usually build wordpress sites and when I give access to
 admin to clients they update wordpress to get latest security updates - I
 now need to tell them not to update and if they do update I will need to
 revert back versions and hopefully they won't break anything.

 Anyone interested I can share more details or access for the site to check
 it up.

 Thanks,

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/49457>
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