Tue Apr 30 2024 13:23:51 UTC
It's not a bug, it's a feature.
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ID Product Comp Assignee Status Resolution Summary Changed
47352 POI XSSF dev RESO DUPL cloneSheet does not copy chart 2015-03-18
57712 POI XSSF dev RESO DUPL Cloning existing Chart in worksheet to another worksheet: does not work 2015-03-18
49319 POI XSSF dev RESO DUPL Clone sheets with drawings 2016-06-15
3 bugs found.

as

File a new bug in the "XSSF" component of the "POI" product