[wp-trac] [WordPress Trac] #55117: Possible 5.9 Bug: Unknown character ( or %ef%bf%bc ) on content title

[WordPress Trac]

#55117: Possible 5.9 Bug: Unknown character ( or %ef%bf%bc ) on content title
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 Reporter:  cantuaria     |       Owner:  audrasjb
     Type:  defect (bug)  |      Status:  assigned
 Priority:  normal        |   Milestone:  5.9.4
Component:  Permalinks    |     Version:  5.9
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:
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Changes (by markparnell):

 * keywords:   => needs-patch


Comment:

 We've started seeing this on a couple of client sites recently too. I
 believe in each case they also copy the content across from outside
 WordPress, but it's definitely something new that has only been introduced
 since WP 5.9.

 One small thing I noticed is that the   character is visible in the title
 in the posts list, but not in the block editor when editing an individual
 post. This makes it really hard to manually remove the extra character.
 Not sure if that helps narrow down the cause or if it's just due to a
 different font being used or something.

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Ticket URL: <https://core.trac.wordpress.org/ticket/55117#comment:22>
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