[wp-trac] [WordPress Trac] #43564: TinyMCE bookmark not removed

[WordPress Trac]

#43564: TinyMCE bookmark not removed
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 Reporter:  waterlord93   |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Future Release
Component:  Editor        |     Version:  4.9.4
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:  ui, javascript, administration
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Comment (by maciejmackowiak):

 Any updates?

 We are expiriencing same issue in WP 5.3.2 with Classic Editor plugin, and
 not only iframes are affected but also style and script tags.

 This looks related to #42908

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Ticket URL: <https://core.trac.wordpress.org/ticket/43564#comment:2>
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