如何解决JavaFX中GridPane无法适配底层单元格的问题

我有一个尺寸为1000×750的GridPane（playingFieldGrdPn）和ImageView，二者均被放置在gameGrdPn的坐标(0,1)处，本应完全重叠，但GridPane比ImageView更宽。测试发现将场景宽度设为1000时，窗口会在ImageView末端被完美截断，说明GridPane宽度莫名超过1000。

控制器代码 #

gameGrdPn.getColumnConstraints().get(0).setMinWidth(1000);
gameGrdPn.getColumnConstraints().get(0).setPrefWidth(1000);
gameGrdPn.getColumnConstraints().get(0).setMaxWidth(1000);
gameGrdPn.getRowConstraints().get(1).setMinHeight(750);
gameGrdPn.getRowConstraints().get(1).setPrefHeight(750);
gameGrdPn.getRowConstraints().get(1).setMaxHeight(750);

playingFieldGrdPn.getColumnConstraints().removeAll(playingFieldGrdPn.getColumnConstraints());
playingFieldGrdPn.getRowConstraints().removeAll(playingFieldGrdPn.getRowConstraints());

playingFieldGrdPn.setMinSize(1000, 750);
playingFieldGrdPn.setMaxSize(1000, 750);
playingFieldGrdPn.setGridLinesVisible(true);
playingFieldGrdPn.setPadding(new Insets(0));
playingFieldGrdPn.prefWidthProperty().bind(gameGrdPn.getColumnConstraints().get(0).prefWidthProperty());

for (int x = 0; x < 1000; x++) {
    ColumnConstraints col = new ColumnConstraints(1);
    col.setHgrow(Priority.NEVER);
    playingFieldGrdPn.getColumnConstraints().add(col);
}

for (int y = 0; y < 750; y++) {
    RowConstraints row = new RowConstraints(1);
    row.setVgrow(Priority.NEVER);
    playingFieldGrdPn.getRowConstraints().add(row);
}

Image playingBoardImg = new Image(getClass().getResourceAsStream("HaseUndIgelPlayingBoard.png"));
ImageView playingBoardView = new ImageView(playingBoardImg);
gameGrdPn.add(playingBoardView, 0, 1, 1000, 750);
gameGrdPn.getChildren().get(4).toBack(); //sending imageView to back

问题截图 #

我尝试调整底层面板的尺寸，结果只是GridPane被截断。本人刚接触JavaFX，恳请帮助！

补充问题 #

我发现放置游戏棋子（gamingPiece）会撑开列宽，现在想知道如何让图片突破所在GridPane单元格的边界？

棋子相关代码 #

for(int i = 0; i < 6; i++){
    Image gamingPieceImg = new Image(getClass().getResourceAsStream("gamingPieces/gamingPiece-"+i+".png"));
    ImageView gamingPieceView = new ImageView(gamingPieceImg);
    gamingPieceView.setFitHeight(60);
    gamingPieceView.setFitWidth(60);

    GridPane.setColumnSpan(gamingPieceView, 1);
    GridPane.setRowSpan(gamingPieceView, 1);

    playingFieldGrdPn.add(gamingPieceView, 1000, 350);
}

内容的提问来源于stack exchange，提问作者Animor Romina