984055 - Folder location widget folder picker collapses if an event causes the folder list to change

Status: RESOLVED DUPLICATE of bug 1509647

(MailNews Core :: Backend, defect)

Description

[:aceman]

Steps to reproduce:
1. put Folder Location widget onto the toolbar
2. have a virtual search folder under a News account
3. select some proper folder in the folder pane
4. restart TB

Result
The Folder location folder picker has minimal width (collapsed) not showing any folder name.

Expected:
It should show the currently selected folder name.

Analysis:
The virtual folder under News causes a "Folder added" event to be sent and the listener in the folder picker notices that and causes the folder picker to teardown (remove all menupopup children) which seems to cause the now empty menulist to collapse. The current code does not rebuild the menupopup children after such event.