[wp-trac] [WordPress Trac] #45341: WSOD when editing a page (Issue introduced between v5Beta3 and v5Beta4)

[WordPress Trac]

#45341: WSOD when editing a page (Issue introduced between v5Beta3 and v5Beta4)
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 Reporter:  timhibberd                |       Owner:  (none)
     Type:  defect (bug)              |      Status:  new
 Priority:  normal                    |   Milestone:  Awaiting Review
Component:  Editor                    |     Version:  5.0
 Severity:  critical                  |  Resolution:
 Keywords:  needs-patch dev-feedback  |     Focuses:
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Comment (by timhibberd):

 Still an issue in 5.0-RC1-43946. As with 5.0-RC1-43945 add / edit page
 seems to work ok BUT if you enable browser debug tools (Firefox) then you
 get a WSOD due to Javascript errors.

 Please do not interpret this as a reason to defer solving it. If it is a
 race condition issue as I suspect then it would randomly re-emerge for
 people who do not have debuger tools enabled.

 {{{
 16:28:04.132 SyntaxError: missing } after property list[Learn More]
 editor.js:19359:34 note: { opened at line 19354, column
 53editor.js:19354:53
 16:28:04.152 TypeError: Object(...) is not a function[Learn More] block-
 library.js:1740:67
 16:28:04.170 TypeError: Object(...)(...) is undefined[Learn More] edit-
 post.js:2102:16
 16:28:04.280 TypeError: wp.editPost is undefined[Learn More]
 post.php:1731:4
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/45341#comment:17>
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