[wp-trac] [WordPress Trac] #21299: upload_mimes filter doesn't work occasionally

[WordPress Trac]

#21299: upload_mimes filter doesn't work occasionally
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 Reporter:  dpacmittal    |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Upload        |     Version:  3.4.1
 Severity:  normal        |  Resolution:
 Keywords:                |
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Comment (by dpacmittal):

 Backupwordpress plugin breaks 'upload_mimes' filter and the developer has
 no clue about it:
 http://wordpress.org/support/topic/backupwordpress-clobbers-upload_mimes-
 filter?replies=2

 Same issue here:
 http://wordpress.stackexchange.com/questions/44777/upload-mimes-filter-
 has-no-effect

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Ticket URL: <http://core.trac.wordpress.org/ticket/21299#comment:4>
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