Explicitly show attachment contents

gtk2_ardour/editor.cc

@@ -645,6 +645,7 @@ Editor::Editor ()
 	ebox_hpacker.show();
 	global_vpacker.show();
 	_bottom_hbox.show();
+	_editor_list_vbox.show ();
 
 	/* register actions now so that set_state() can find them and set toggles/checks etc */
 

gtk2_ardour/editor_mixer.cc

@@ -62,6 +62,7 @@ using namespace PBD;
 void
 Editor::showhide_att_left (bool yn)
 {
+	Tabbable::showhide_att_left (yn);
 	show_editor_mixer (yn);
 }
 

gtk2_ardour/mixer_ui.cc

@@ -403,7 +403,7 @@ Mixer_UI::Mixer_UI ()
 	scroller_base.show();
 	scroller_hpacker.show();
 	mixer_scroller_vpacker.show();
-	list_vpacker.show();
+	list_vpacker.show_all();
 	group_display_button_label.show();
 	group_display_scroller.show();
 	favorite_plugins_scroller.show();