[wp-trac] [WordPress Trac] #30001: U+FEFF at start of fields crash Chrome

[WordPress Trac]

#30001: U+FEFF at start of fields crash Chrome
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 Reporter:  mikenolan     |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  4.0
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Came across this earlier in the week on the same day as we found #30000.
 Also only happens in Twenty Twelve.

 If a U+FEFF character appears at the start of the title of a post then
 viewing the post will crash Chrome (and Opera):

 https://drive.google.com/file/d/0B-
 rPZ6460XuzTGVLTEcybEM1eUU/view?usp=sharing

 It only happens if the character is at the start of the title and also
 happens with other fields such as excerpt on pages where that text is
 shown (e.g. search results pages)

 Can also reproduce on WordPress.com (this will crash your browser tab in
 Chrome!!):

 http://mikenolan.wordpress.com/ufeff-bug/

 One of our servers (running a different version of PHP but same version of
 WordPress and Twenty Twelve theme) replaces the U+FEFF character with a
 question mark and pages load fine.

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Ticket URL: <https://core.trac.wordpress.org/ticket/30001>
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