MB: prefs are detached initially

diff --git a/gtk2_ardour/rc_option_editor.cc b/gtk2_ardour/rc_option_editor.cc
index 856297d48fbd6c92fd9e039ce7466ccc5b642ff5..a37fb2fb11a1104975c288ef5c4a7d2de66dc97f 100644 (file)
--- a/gtk2_ardour/rc_option_editor.cc
+++ b/gtk2_ardour/rc_option_editor.cc
@@ -2114,7 +2114,11 @@ MidiPortOptions::pretty_name_edit (std::string const & path, string const & new_
 
 RCOptionEditor::RCOptionEditor ()
        : OptionEditorContainer (Config, string_compose (_("%1 Preferences"), PROGRAM_NAME))
-       , Tabbable (*this, _("Preferences")) /* pack self-as-vbox into tabbable */
+       , Tabbable (*this, _("Preferences")
+#ifdef MIXBUS
+                       , false // detached by default (first start, no instant.xml)
+#else
+                       ) /* pack self-as-vbox into tabbable */
        , _rc_config (Config)
        , _mixer_strip_visibility ("mixer-element-visibility")
 {