#5765 BLOC Never A: Back and Forward drop-down menus disappear

[Zarro Boogs per Child]

#5765: Back and Forward drop-down menus disappear
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 Reporter:  legutierr        |       Owner:  erikos        
     Type:  defect           |      Status:  new           
 Priority:  blocker          |   Milestone:  Never Assigned
Component:  browse-activity  |     Version:  Build 650     
 Keywords:                   |    Verified:  0             
 Blocking:                   |   Blockedby:                
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 When browsing this website (dev.laptop.org), if, after having entered
 (clicked into) a ticket detail page that contains a wiki-dynamically-
 generated link to another bug/ticket in the main body (i.e. #5751 appears
 in the source), you navigate back by pressing the back button, the forward
 button looses its drop-down menu.  The forward history is no longer
 visible and forward navigation can only proceed one page at a time (can't
 skip ahead) for the rest of the life of that instance of Browse.

 If, however, after having browsed into one of those link-to-another-
 ticket-containing detail pages, you click on the link it contains to
 another bug (instead of back-tracking), and ''if that second ticket-detail
 page also contains a wiki-dynamically-generated link to another ticket
 detail'', then the '''back''' button looses its drop-down menu.  At this
 point, the forward drop-down menu is still working, and if you type a new
 URL into the URL field, it should continue working for the life of the
 instance (although the back button drop-down will not).

 ''However'', if after having made the drop-down of the back button
 disappear, you ''then'' backtrack once, the forward button drop-down also
 disappears, leaving you with no forward or back drop-downs for the rest of
 the life of that instance of Browse.

 I have also experienced this behavior in other web sites, but
 dev.laptop.org is the only place where I have been able to reproduce this
 behavior consistently.

 Also, in looking at the back or forward button itself, it looks like the
 ~1 pixel gray line that borders the sides and top of the button is
 inverted when this behavior is displayed.  Is it possible that the drop-
 down itself is being inverted, and is being drawn off-screen?

 As far as I can tell, no log information prints at all when performing
 these actions in Browse.

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Ticket URL: <http://dev.laptop.org/ticket/5765>
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