better behaviour of column width in ACE. Fixes #7446

src/advanced_configuration_window.py

@@ -119,10 +119,13 @@ class AdvancedConfigurationWindow(object):
 
         col.props.resizable = True
         col.set_property('expand',True)
+        col.set_property('sizing',gtk.TREE_VIEW_COLUMN_FIXED)
 
         renderer_text = gtk.CellRendererText()
-        treeview.insert_column_with_attributes(-1, _('Type'),
+        col = treeview.insert_column_with_attributes(-1, _('Type'),
                 renderer_text, text = 2)
+        col.set_property('expand',True)
+        col.set_property('sizing',gtk.TREE_VIEW_COLUMN_FIXED)
 
         treeview.set_model(self.modelfilter)