I was able to reproduce the issue you mentioned by using your template XLSX file. I found when saving the Excel file to PowerPoint (PPTX), it does not respect hidden rows and does render those hidden rows in the output file as well.
We require thorough evaluation of your issue. We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.
Issue ID(s): CELLSNET-54753
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@kippow
I will add PptxSaveOptions.IgnoreHiddenRows property to support your need.
Please try the following codes with the next version 23.12 which will be released in the next week:
The issues you have found earlier (filed as CELLSNET-54753) have been fixed in this update. This message was posted using Bugs notification tool by johnson.shi