SpreadsheetView column fit incorrect with span column cells

[TabFil]

Hello,

switching from ver 8 to ver 11 I found that if I put long text in a cell spanning over multiple columns, all the columns involved in the span get the width of the spanned cell.
Expected (ver 8):

Result (ver 11):

Here's the code used to generate the example (the code is the same the behaviour si different in ver 8 vs 11:

 GridBase grid = new GridBase(2, 3);
        ObservableList<ObservableList<SpreadsheetCell>> rows = FXCollections.observableArrayList();
        for (int row = 0; row < grid.getRowCount(); ++row) {
            final ObservableList<SpreadsheetCell> list = FXCollections.observableArrayList();
            for (int column = 0; column < grid.getColumnCount(); ++column)
                list.add(SpreadsheetCellType.STRING.createCell(row, column, 1, 1, "value"));
            rows.add(list);
        }
        grid.setRows(rows);
        grid.spanColumn(2, 0, 0);
        grid.setCellValue(0, 0, "value___________");
        SpreadsheetView spv = new SpreadsheetView(grid);

Thanks in advance for any help.
Best regards,
Filippo