fix

de.bmotionstudio.gef.editor/src/de/bmotionstudio/gef/editor/action/BMotionObserverWizardDialog.java

@@ -16,8 +16,7 @@ public class BMotionObserverWizardDialog extends BMotionAbstractWizardDialog {
 
 	public BMotionObserverWizardDialog(IWorkbenchPart workbenchPart, IWizard newWizard) {
 		super(workbenchPart, newWizard);
-		setShellStyle(SWT.CLOSE);
-		setShellStyle(SWT.RESIZE);
+		setShellStyle(SWT.CLOSE | SWT.RESIZE);
 		setDeleteToolTip("Delete Observer");
 	}