Merge branch 'wip/otte/for-main' into 'main'

various fixes

See merge request GNOME/gtk!5756

(cherry picked from commit 515f39f161)

6f417534 widget: Shortcut widget not repositioning
dbff49b5 listbase: Clear any newly set adjustments

gtk/gtklistbase.c

@@ -639,6 +639,8 @@ gtk_list_base_set_adjustment (GtkListBase    *self,
 
   if (adjustment == NULL)
     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
+  else
+    gtk_adjustment_configure (adjustment, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0);
   g_object_ref_sink (adjustment);
 
   gtk_list_base_clear_adjustment (self, orientation);

gtk/gtkwidget.c

@@ -5972,6 +5972,9 @@ gtk_widget_reposition_after (GtkWidget *widget,
   prev_parent = priv->parent;
   prev_previous = priv->prev_sibling;
 
+  if (priv->parent == parent && previous_sibling == prev_previous)
+    return;
+
   if (priv->parent != NULL && priv->parent != parent)
     {
       g_warning ("Can't set new parent %s %p on widget %s %p, "