diff --git a/gtk/gtkcoloreditor.c b/gtk/gtkcoloreditor.c
index c48d0eb668..f818382dd8 100644
--- a/gtk/gtkcoloreditor.c
+++ b/gtk/gtkcoloreditor.c
@@ -273,8 +273,6 @@ get_child_position (GtkOverlay     *overlay,
                     GtkColorEditor *editor)
 {
   GtkRequisition req;
-  GtkAllocation alloc;
-  int s, e;
   graphene_point_t p;
 
   gtk_widget_get_preferred_size (widget, &req, NULL);
@@ -298,22 +296,20 @@ get_child_position (GtkOverlay     *overlay,
     }
   else if (widget == editor->h_popup)
     {
-      gtk_widget_get_allocation (editor->h_slider, &alloc);
-      gtk_range_get_slider_range (GTK_RANGE (editor->h_slider), &s, &e);
+      int slider_width;
+
+      slider_width = gtk_widget_get_width (editor->h_slider);
 
       if (!gtk_widget_compute_point (editor->h_slider,
                                      gtk_widget_get_parent (editor->grid),
                                      gtk_widget_get_direction (GTK_WIDGET (overlay)) == GTK_TEXT_DIR_RTL
                                        ? &GRAPHENE_POINT_INIT (- req.width - 6, editor->popup_position - req.height / 2)
-                                       : &GRAPHENE_POINT_INIT (alloc.width + 6, editor->popup_position - req.height / 2),
+                                       : &GRAPHENE_POINT_INIT (slider_width + 6, editor->popup_position - req.height / 2),
                                      &p))
         return FALSE;
     }
   else if (widget == editor->a_popup)
     {
-      gtk_widget_get_allocation (editor->a_slider, &alloc);
-      gtk_range_get_slider_range (GTK_RANGE (editor->a_slider), &s, &e);
-
       if (!gtk_widget_compute_point (editor->a_slider,
                                      gtk_widget_get_parent (editor->grid),
                                      &GRAPHENE_POINT_INIT (editor->popup_position - req.width / 2, - req.height - 6),
diff --git a/gtk/gtkplacessidebar.c b/gtk/gtkplacessidebar.c
index c0293d457a..9b699e885f 100644
--- a/gtk/gtkplacessidebar.c
+++ b/gtk/gtkplacessidebar.c
@@ -3484,7 +3484,6 @@ on_row_dragged (GtkGestureDrag *gesture,
       GdkContentProvider *content;
       GdkSurface *surface;
       GdkDevice *device;
-      GtkAllocation allocation;
       GtkWidget *drag_widget;
       GdkDrag *drag;
 
@@ -3509,12 +3508,13 @@ on_row_dragged (GtkGestureDrag *gesture,
       g_signal_connect (drag, "dnd-finished", G_CALLBACK (dnd_finished_cb), sidebar);
       g_signal_connect (drag, "cancel", G_CALLBACK (dnd_cancel_cb), sidebar);
 
-      gtk_widget_get_allocation (sidebar->drag_row, &allocation);
       gtk_widget_set_visible (sidebar->drag_row, FALSE);
 
       drag_widget = GTK_WIDGET (gtk_sidebar_row_clone (GTK_SIDEBAR_ROW (sidebar->drag_row)));
-      sidebar->drag_row_height = allocation.height;
-      gtk_widget_set_size_request (drag_widget, allocation.width, allocation.height);
+      sidebar->drag_row_height = gtk_widget_get_height (sidebar->drag_row);
+      gtk_widget_set_size_request (drag_widget,
+                                   gtk_widget_get_width (sidebar->drag_row),
+                                   gtk_widget_get_height (sidebar->drag_row));
       gtk_widget_set_opacity (drag_widget, 0.8);
 
       gtk_drag_icon_set_child (GTK_DRAG_ICON (gtk_drag_icon_get_for_drag (drag)), drag_widget);
diff --git a/gtk/gtkrange.c b/gtk/gtkrange.c
index a51c7d447d..cf7a0a5bcd 100644
--- a/gtk/gtkrange.c
+++ b/gtk/gtkrange.c
@@ -1010,7 +1010,7 @@ gtk_range_get_slider_range (GtkRange *range,
   else
     {
       if (slider_start)
-        *slider_start = slider_bounds.origin.y;
+        *slider_start = slider_bounds.origin.x;
       if (slider_end)
         *slider_end = slider_bounds.origin.x + slider_bounds.size.width;
     }