Bug with Sorting in Office Scripts in Excel 365

I wrote an Office Script to sort automatically sort a range in my Excel worksheets, but it produces a really major bug where values are missing after a sort.  Specifically, it looks like the final columns that have been sorted end up with truncated data.  

The script is very simple, but it creates this error systematically:

function main(workbook: ExcelScript.Workbook) {
    let selectedSheet = workbook.getActiveWorksheet();

    let usedRange = selectedSheet.getUsedRange();

    //Display range to be sorted
    console.log(usedRange.getAddress());

    //Sort the sheet
    usedRange.getSort().apply([{ key: 0, ascending: true }], false, true, ExcelScript.SortOrientation.columns);

}

Here is what gets produced.  Note that the bottom right cells are truncated (starting from CJ17:CN34):

This seems like a major issue.  Has anyone run into this and does anyone know if there is a fix?