Hello World,

First off, this is not a problem, more of a question.

I have a worksheet that has:
6 columns and 462 rows of data all text

Worksheet does not have:
macros, added VBA, graphics, controls, conditional formats, etc. Strictly text data.

As I am reviewing the data for analysis purposes, I have hidden some rows. When I attempt to adjust the row height (by click-to-drag on the row margin), all row headers below the selected rows "go black" (see attached picture). It is not permanent; moving my mouse over the "blackness" will reveal the headers below and zooming in or out on the information will reveal all headers as well. This blackness only appears when I click on row margins AND if rows are hidden.


My questions are:
Has this happened to anyone else?
Should I be concerned with the integrity of the sheet?

I have tried saving as .xls, .xlsx, and .xlsb but the issue persists throughout.

Any thoughts or links to other instances posted online would be greatly appreciated.
Any jokes about Once you go black... also welcome! :)

1.jpg - Picture just shows where I click on the row margins
2.jpg - Blacked out row headers.