[Pidgin] #12894: cursor keys cannot always scroll to bottom of conversation window

[Pidgin]

#12894: cursor keys cannot always scroll to bottom of conversation window
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Reporter:  ari    |        Type:  defect      
  Status:  new    |   Component:  pidgin (gtk)
 Version:  2.7.5  |    Keywords:              
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 From http://bugs.debian.org/603724:

 1. Have a window with some lines in it, so there is a scrollback history.
 2. Click in it and scroll up to the top and then back down with arrow
 keys.
 3. Now wait a while for some new messages to show up.

 Expected behavior: Since I scrolled "all the way down", I should see new
 messages displayed as they come in.

 Actual behavior: New messages are hidden, because pidgin thinks I am
 still scrolled up. Specifically, I seem to be scrolled back by 1 pixel.

 Screenshot attached of window in this state. If I then click on the down
 arrow, the basically invisible gap I was scrolled up goes away, and the
 arrow dims, and I am finally scrolled down.

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Ticket URL: <http://developer.pidgin.im/ticket/12894>
Pidgin <http://pidgin.im>
Pidgin