Index: src/common/config.py
===================================================================
--- src/common/config.py	(revision 14330)
+++ src/common/config.py	(revision 14450)
@@ -163,4 +163,5 @@
             'roster_width': [ opt_int, 200 ],
             'roster_height': [ opt_int, 400 ],
+            'roster_hpaned_position': [opt_int, 200],
             'history_window_width': [ opt_int, 650 ],
             'history_window_height': [ opt_int, 450 ],
Index: src/message_window.py
===================================================================
--- src/message_window.py	(revision 14114)
+++ src/message_window.py	(revision 14450)
@@ -1000,5 +1000,5 @@
         win.resize(size[0], size[1])
         if win.parent_paned:
-            win.parent_paned.set_position(parent_size[0])
+            win.parent_paned.set_position(gajim.config.get('roster_hpaned_position'))
 
     def _position_window(self, win, acct, type_):
Index: src/roster_window.py
===================================================================
--- src/roster_window.py	(revision 14436)
+++ src/roster_window.py	(revision 14450)
@@ -4492,4 +4492,5 @@
             roster_width = pane.get_child1().allocation.width
             gajim.config.set('roster_width', roster_width)
+            gajim.config.set('roster_hpaned_position', pane.get_position())
 
 ################################################################################