Treeview selections vanish when parent collapses

[Jeffrey Barish <jeff_barish earthlink net>]

If you select children in a treeview and then collapse the parent, the 
selections vanish.  So: select a child, collapse the parent, expand the 
parent, the child is no longer selected.  That behavior seems wrong to me.  
Should I file a bug, or is GTK designed to work this way?  The tutorial for 
GTK 1.2 says that the selection should remain, but that source is ancient 
history.
-- 
Jeffrey Barish