diff --git a/gramps/gui/plug/quick/_quicktable.py b/gramps/gui/plug/quick/_quicktable.py
index e935abe55..be90a237e 100644
--- a/gramps/gui/plug/quick/_quicktable.py
+++ b/gramps/gui/plug/quick/_quicktable.py
@@ -351,12 +351,7 @@ class QuickTable(SimpleTable):
         #treeview.enable_model_drag_dest(DdTargets.all_targets(),
         #                                Gdk.DragAction.DEFAULT)            
         treeview.connect('drag_data_get', self.object_drag_data_get)
-        if (treeview.get_direction() == Gtk.TextDirection.RTL and
-            (Gtk.get_major_version(), Gtk.get_minor_version()) < (3, 8)):
-            # Don't show vertical grid lines with RTL (bug #6871)
-            treeview.set_grid_lines(Gtk.TreeViewGridLines.HORIZONTAL)
-        else:
-            treeview.set_grid_lines(Gtk.TreeViewGridLines.BOTH)
+        treeview.set_grid_lines(Gtk.TreeViewGridLines.BOTH)
         #treeview.connect('row-activated', on_table_doubleclick, self)
         #treeview.connect('cursor-changed', on_table_click, self)
         treeview.connect('button-press-event', self.button_press_event)
diff --git a/gramps/gui/widgets/multitreeview.py b/gramps/gui/widgets/multitreeview.py
index 9190aa597..bdd40b76c 100644
--- a/gramps/gui/widgets/multitreeview.py
+++ b/gramps/gui/widgets/multitreeview.py
@@ -45,6 +45,19 @@ class MultiTreeView(Gtk.TreeView):
         self.connect('key_press_event', self.key_press_event)
         self.defer_select = False
 
+    __grid_lines_remove_vertical = {
+        Gtk.TreeViewGridLines.NONE : Gtk.TreeViewGridLines.NONE,
+        Gtk.TreeViewGridLines.HORIZONTAL : Gtk.TreeViewGridLines.HORIZONTAL,
+        Gtk.TreeViewGridLines.VERTICAL : Gtk.TreeViewGridLines.NONE,
+        Gtk.TreeViewGridLines.BOTH : Gtk.TreeViewGridLines.HORIZONTAL
+    }
+    def set_grid_lines(self, grid_lines):
+        if (self.get_direction() == Gtk.TextDirection.RTL and
+            (Gtk.get_major_version(), Gtk.get_minor_version()) < (3, 8)):
+            # Work around a gtk RTL bug, see #6871
+            grid_lines = MultiTreeView.__grid_lines_remove_vertical[grid_lines]
+        super(MultiTreeView, self).set_grid_lines(grid_lines)
+
     def key_press_event(self, widget, event):
         if event.type == Gdk.EventType.KEY_PRESS:
             if event.keyval == Gdk.KEY_Delete: