Mac applets: focus issues (?) resulting in key events not being delivered to text area

While working on RT-22996 I discovered that there is an issue with focus affecting the key events, where they are not being delivered to the text area even though the events are delivered to the Applet window itself.

http://sqeweb.us.oracle.com/deployment1/deployment_6_UR_int_exec_ws/6/deployment/src/javafx/fxfeaturesTest/fxfeaturesTest/html/FullscreenTextTest.html