Please see the attached test case. Press the left key to toggle the content and column size of Textbox. IT doesn't work . Now uncomment the lines 52 , 53 and repeat the same and it works. Why should we refresh the layout to see the change to take effect? Also on closing the application window we see the following Exception.
 
java.lang.RuntimeException: A bound value cannot be set.
at javafx.beans.property.StringPropertyBase.set(StringPropertyBase.java:102)
at javafx.scene.control.TextInputControl.setText(TextInputControl.java:135)
at javafx.scene.control.TextInputControl.commit(TextInputControl.java:911)
at com.sun.javafx.scene.control.behavior.TextInputControlBehavior.focusChanged(TextInputControlBehavior.java:586)
at com.sun.javafx.scene.control.behavior.TextInputControlBehavior$1.invalidated(TextInputControlBehavior.java:231)
at javafx.beans.value.ObservableValueBase.fireValueChangedEvent(ObservableValueBase.java:107)
at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:58)
at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:108)
at javafx.scene.Node.setFocused(Node.java:4663)
at javafx.scene.Scene$KeyHandler.setWindowFocused(Scene.java:2288)
at javafx.scene.Scene$KeyHandler$1.invalidated(Scene.java:2307)
at javafx.beans.value.ObservableValueBase.fireValueChangedEvent(ObservableValueBase.java:107)
at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:58)
at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:108)
at javafx.stage.Window.setFocused(Window.java:224)
at com.sun.javafx.stage.WindowPeerListener.changedFocused(WindowPeerListener.java:47)
at com.sun.javafx.tk.quantum.GlassWindowEventHandler.handleWindowEvent(GlassWindowEventHandler.java:47)
at com.sun.glass.ui.Window.handleWindowEvent(Window.java:874)
at com.sun.glass.ui.Window.notifyFocus(Window.java:857)
at com.sun.glass.ui.win.WinWindow._setVisible(Native Method)
at com.sun.glass.ui.Window.setVisible(Window.java:354)
at com.sun.javafx.tk.quantum.WindowStage.setVisible(WindowStage.java:343)
at javafx.stage.Window$12.invalidated(Window.java:490)
at javafx.beans.property.BooleanPropertyBase.markInvalid(BooleanPropertyBase.java:57)
at javafx.beans.property.BooleanPropertyBase.set(BooleanPropertyBase.java:108)
at javafx.stage.Window.setVisible(Window.java:515)
at javafx.stage.Stage.setVisible(Stage.java:105)
at javafx.stage.Window.hide(Window.java:526)
at com.sun.javafx.stage.WindowPeerListener.closing(WindowPeerListener.java:64)
at com.sun.javafx.tk.quantum.GlassStage.close(GlassStage.java:97)
at com.sun.javafx.tk.quantum.WindowStage.close(WindowStage.java:416)
at com.sun.javafx.tk.quantum.GlassWindowEventHandler.handleWindowEvent(GlassWindowEventHandler.java:30)
at com.sun.glass.ui.Window.handleWindowEvent(Window.java:874)
at com.sun.glass.ui.Window.notifyClose(Window.java:791)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:29)
at com.sun.glass.ui.win.WinApplication$1$1.run(WinApplication.java:49)
at java.lang.Thread.run(Thread.java:662)