[Bugs] #4385 Browse UNSP: Browse: opening a PDF the second time shows bad download progress

[Sugar Labs Bugs]

#4385: Browse: opening a PDF the second time shows bad download progress
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    Reporter:  manuq                      |          Owner:  humitos    
        Type:  defect                     |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  1.0        
   Component:  Browse                     |        Version:  Unspecified
    Severity:  Unspecified                |       Keywords:             
Distribution:  Unspecified                |   Status_field:  Unconfirmed
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 TestCase:

 - Click on a link with a large PDF file, for example the one in this page:
 http://wiki.sugarlabs.org/go/File:Dt19.pdf

 - The progress can be seen in the url entry.  Cancel it at about 50%,
 closing the tab or clicking the X icon in the entry.

 - Click on the link again and wait.

 The progress will not be displayed until it reaches 50%.  That is, it will
 start displaying after it passes the reached percent.  If the PDF was
 downloaded and displayed, closing and opening it again will not show any
 progress at all.

 Expected behaviour: always show the progress.

 Maybe this means that webkit can remember the downloaded bits.  In that
 case, Browse doesn't seem to take adventage of that, because the long wait
 shows that it is downloading them again.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/4385>
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