Thu Jan 23 2020 23:02:49 UTC
the box said: "Requires Windows9x,Me,Nt,2000 or better" . So I installed Linux !
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ID Product Comp Assignee Status Resolution Summary Changed
58005 POI SXSSF dev RESO DUPL Amount of CellStyles is still limited to 32K 2015-08-19
53209 POI XSSF dev RESO DUPL Too many styles corrupts the excel 2015-09-03
2 bugs found.

as

File a new bug in the "POI" product