It is not a defect. As choroba says, you yourself skip setting the cell to zero if the entry ($token) is zero.
UPDATE: Apologies. I had not realized that you were quoting module code, rather than your own. Will read the post more carefully next time.
In reply to Re^3: Excel::Writer::XLSX::add_table omits zeros
by hdb
in thread Excel::Writer::XLSX::add_table omits zeros
by david2008
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