hugging Microsoft with their clucking buggy software!

>> generate an xls with Apache POI
>> colour some particular cells in green, others - in red.
>> export as xls

>> open with LibreOffice Calc -- looks pretty
>> upload to Slack, open slack's generated xls preview -- looks pretty
>> open with GDocs -- looks pretty
>> open with sheet.zoho.com -- looks pretty
>> open with onlinedocumentviewer.com -- looks pretty
>> open with aspose.app -- looks pretty

>> open the xls with MS Office Excel -- more than half of the cells are unformatted, uncoloured

🔥🗑🔥