[Pidgin] #8816: [yahoo] Buddy is sometimes shown as "not on server list" indefinately after adding to list

[Pidgin]

#8816: [yahoo] Buddy is sometimes shown as "not on server list" indefinately after
adding to list
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 Reporter:  alexmaco         |           Owner:  lschiere
     Type:  defect           |          Status:  new     
Component:  unclassified     |         Version:  2.5.5   
 Keywords:  crash add buddy  |   Launchpad_bug:          
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 [only tested on yahoo]

 This bug appears sometimes, either after sending an add request or
 accepting one.

 Steps to reproduce:
 1 - submit / accept add buddy request

 Expected results:
 - buddy is shown as offline and not on server list (even when he actually
 is online) for an indefinite amount of time (can range from a few days to
 forever)
 - communication is possible with the buddy (as though he was invisible)

 Aditional circumstances:
 - repeated deletion from buddy list an re-adding can also lead to this bug
 if it doesn't happen the first time
 - after trying the above it can also appear with buddies that previously
 were shown normally
 - this bug was tested and reproduced on pidgin versions 2.5.5 and 2.5.4 on
 ubuntu gnu/linux 8.04 and 8.10
 - I do not actually know if this is caused by the yahoo server or by the
 pidgin client, but i've never seen it on yahoo messenger clients so i
 think this is the most likely place to find for it.

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Ticket URL: <http://developer.pidgin.im/ticket/8816>
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