diff --git a/gtk2_ardour/group_tabs.cc b/gtk2_ardour/group_tabs.cc
index 1332d4ba10..b8d30dc989 100644
--- a/gtk2_ardour/group_tabs.cc
+++ b/gtk2_ardour/group_tabs.cc
@@ -42,7 +42,7 @@ GroupTabs::GroupTabs ()
 	, _dragging (0)
 	, _dragging_new_tab (0)
 {
-
+	add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK);
 }
 
 GroupTabs::~GroupTabs ()
@@ -175,6 +175,8 @@ GroupTabs::on_motion_notify_event (GdkEventMotion* ev)
 	set_dirty ();
 	queue_draw ();
 
+	gdk_event_request_motions(ev);
+
 	return true;
 }
 
diff --git a/gtk2_ardour/time_axis_view.cc b/gtk2_ardour/time_axis_view.cc
index fdb9782236..2cc2adf761 100644
--- a/gtk2_ardour/time_axis_view.cc
+++ b/gtk2_ardour/time_axis_view.cc
@@ -410,6 +410,7 @@ TimeAxisView::controls_ebox_motion (GdkEventMotion* ev)
 		maybe_set_cursor (ev->y);
 	}
 
+	gdk_event_request_motions(ev);
 	return true;
 }