Posted 16 November 2020, 6:58 pm ESTHi,
When I save certain kind of workbook to memory stream, the formats disappear from workbook:
MemoryStream workBook = new MemoryStream();
See attached image.
Using version 13.45.20203.0.
This worked with version 12.45.20191.0.
Attached sample workbook where formatting disappear.
Saved workbook result.zipFormatting-disappear.zip