Index: trunk/src/org/openstreetmap/josm/gui/util/AdvancedKeyPressDetector.java
===================================================================
--- trunk/src/org/openstreetmap/josm/gui/util/AdvancedKeyPressDetector.java	(revision 7632)
+++ trunk/src/org/openstreetmap/josm/gui/util/AdvancedKeyPressDetector.java	(revision 7633)
@@ -88,6 +88,8 @@
                 if (set.remove(releaseEvent.getKeyCode()) && enabled) {
                     synchronized (AdvancedKeyPressDetector.this) {
-                        for (KeyPressReleaseListener q: keyListeners) {
-                            q.doKeyReleased(releaseEvent);
+                        if (isFocusInMainWindow()) {
+                            for (KeyPressReleaseListener q: keyListeners) {
+                                q.doKeyReleased(releaseEvent);
+                            }
                         }
                     }