Program: 78131
Project: 78131
Buggy source:
public void prepare(Stage mainStage,ApplicationContext applicationContext) throws IOException {
  this.mainStage=mainStage;
  this.applicationContext=applicationContext;
  double screenWidth=Screen.getPrimary().getBounds().getWidth();
  double screenHeight=Screen.getPrimary().getBounds().getHeight();
  LOGGER.info("String_Node_Str" + screenWidth + "String_Node_Str"+ screenHeight);
  SpringFXMLLoader.FXMLWrapper<Object,ShootingAdminController> shootingWrapper=springFXMLLoader.loadAndWrap("String_Node_Str",ShootingAdminController.class);
  this.shootingScene=new Scene((Parent)shootingWrapper.getLoadedObject(),screenWidth,screenHeight);
  SpringFXMLLoader.FXMLWrapper<Object,MainFrameController> mfWrapper=springFXMLLoader.loadAndWrap("String_Node_Str",MainFrameController.class);
  this.mainStage.setTitle("String_Node_Str");
  this.mainScene=new Scene((Parent)mfWrapper.getLoadedObject(),screenWidth,screenHeight);
  this.mainStage.setScene(mainScene);
  this.mainStage.show();
  int anz=1;
  int x=200;
  for (int i=0; i < anz; i++) {
    Stage stage=new Stage();
    stage.setTitle("String_Node_Str" + (i + 1));
    stage.setScene(new Scene((Parent)springFXMLLoader.load("String_Node_Str"),400,400));
    stage.setFullScreen(false);
    stage.initOwner(mainStage);
    stage.setX(x);
    stage.show();
    x+=200;
  }
  SpringFXMLLoader.FXMLWrapper<Object,ProfileFrameController> profileWrapper=springFXMLLoader.loadAndWrap("String_Node_Str",ProfileFrameController.class);
  this.profileScene=new Scene((Parent)profileWrapper.getLoadedObject(),screenWidth,screenHeight);
  SpringFXMLLoader.FXMLWrapper<Object,LoginFrameController> adminLoginWrapper=springFXMLLoader.loadAndWrap("String_Node_Str",LoginFrameController.class);
  this.adminLoginScene=new Scene((Parent)adminLoginWrapper.getLoadedObject(),screenWidth,screenHeight);
  try {
    CameraHandler cameraHandler=this.applicationContext.getBean(CameraHandlerImpl.class);
    cameraHandler.getImages();
  }
 catch (  Exception e) {
    LOGGER.info("String_Node_Str" + e);
  }
}

Fixed version (ground truth):
public void prepare(Stage mainStage,ApplicationContext applicationContext) throws IOException {
  this.mainStage=mainStage;
  this.applicationContext=applicationContext;
  double screenWidth=Screen.getPrimary().getBounds().getWidth();
  double screenHeight=Screen.getPrimary().getBounds().getHeight();
  LOGGER.info("String_Node_Str" + screenWidth + "String_Node_Str"+ screenHeight);
  SpringFXMLLoader.FXMLWrapper<Object,ShootingAdminController> shootingWrapper=springFXMLLoader.loadAndWrap("String_Node_Str",ShootingAdminController.class);
  this.shootingScene=new Scene((Parent)shootingWrapper.getLoadedObject(),screenWidth,screenHeight);
  SpringFXMLLoader.FXMLWrapper<Object,MainFrameController> mfWrapper=springFXMLLoader.loadAndWrap("String_Node_Str",MainFrameController.class);
  this.mainStage.setTitle("String_Node_Str");
  this.mainScene=new Scene((Parent)mfWrapper.getLoadedObject(),screenWidth,screenHeight);
  this.mainStage.setScene(mainScene);
  this.mainStage.setFullScreen(true);
  int anz=1;
  int x=200;
  for (int i=0; i < anz; i++) {
    Stage stage=new Stage();
    stage.setTitle("String_Node_Str" + (i + 1));
    stage.setScene(new Scene((Parent)springFXMLLoader.load("String_Node_Str"),400,400));
    stage.setFullScreen(false);
    stage.initOwner(mainStage);
    stage.setX(x);
    stage.show();
    x+=200;
  }
  SpringFXMLLoader.FXMLWrapper<Object,ProfileFrameController> profileWrapper=springFXMLLoader.loadAndWrap("String_Node_Str",ProfileFrameController.class);
  this.profileScene=new Scene((Parent)profileWrapper.getLoadedObject(),screenWidth,screenHeight);
  SpringFXMLLoader.FXMLWrapper<Object,LoginFrameController> adminLoginWrapper=springFXMLLoader.loadAndWrap("String_Node_Str",LoginFrameController.class);
  this.adminLoginScene=new Scene((Parent)adminLoginWrapper.getLoadedObject(),screenWidth,screenHeight);
  try {
    CameraHandler cameraHandler=this.applicationContext.getBean(CameraHandlerImpl.class);
    cameraHandler.getImages();
  }
 catch (  Exception e) {
    LOGGER.info("String_Node_Str" + e);
  }
  this.mainStage.show();
}