https://bz.apache.org/bugzilla/show_bug.cgi?id=59645

--- Comment #3 from Terry Warren <terrywar...@gmail.com> ---
I don't really have any in depth knowledge of xlsx internal formats. However, I
did attempt to create 2 spreadsheets as suggested. I don't have a fancy
difference program, but I do have a program that produces a hex dump, so I did
that for the 2 files and looked at them. The files were created as follows:

(1) empty excel spreadsheet, then go to Page Setup -> Sheet and checked the
Pint Row and Column headings checkbox.
(2) saved this file as reference1.xlsx
(3) unchecked the box and saved again, this time as reference2.xlsx
(4) created the hex dumps for those 2 files.

Attached is a printout of what seemed to be different in the 2 files (not
necessarily a thorough examination):

seem to be the same up until offset 48E0 where that 1 byte is different
then different again at offset:
  reference1 48F0 - 4A7E
  reference2 48F0 - 4A8B

(so, reference1 has 11 extra bytes, plus differences)

then same again

I can send complete hex dump output if it would be helpful.

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