Thanks for your posting and using Aspose.Cells for Java.
Please download and use the latest version: Aspose.Cells
for Java v184.108.40.206 it works fine with your source xlsx file and generates correct pdf. I have tested it with the following code and attached the output pdf for your reference.
String filePath = “F:\Shak-Data-RW\Downloads\Dishwasher+Roster.xlsx”;
Workbook workbook = new Workbook(filePath);
workbook.save(filePath + “.out.pdf”, SaveFormat.PDF);