--- mixer_strip.cc	2013-09-19 03:30:48.000000000 +1100
+++ mixer_strip.cc.orig	2013-07-24 02:29:10.000000000 +1100
@@ -789,7 +789,6 @@
 		}
 
 		output_selector = new IOSelectorWindow (_session, output);
-		output_selector->set_transient_for(_mixer);
 	}
 
 	if (output_selector->is_visible()) {
@@ -806,7 +805,6 @@
 {
 	if (input_selector == 0) {
 		input_selector = new IOSelectorWindow (_session, _route->input());
-		input_selector->set_transient_for(_mixer);
 	}
 
 	if (input_selector->is_visible()) {