[wp-trac] [WordPress Trac] #39550: Some Non-image files fail to upload after 4.7.1

[WordPress Trac]

#39550: Some Non-image files fail to upload after 4.7.1
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 Reporter:  greatislander  |       Owner:  joemcgill
     Type:  defect (bug)   |      Status:  closed
 Priority:  normal         |   Milestone:  4.7.3
Component:  Upload         |     Version:  4.7.1
 Severity:  critical       |  Resolution:  fixed
 Keywords:  fixed-major    |     Focuses:
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Comment (by lukecavanagh):

 @blobfolio

 Sharing XLS files, which return the different headers would help for
 testing as well.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39550#comment:151>
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