"Excel's default behavior is to convert certain text entries into dates. It makes sense for general spreadsheet use, but not for geneticists. Genes, like Membrane Associated Ring-CH-Type Finger 1, are given alphanumeric symbols (MARCH1) as a shorthand for their full, complex names. When a scientist would input "MARCH1" into an Excel spreadsheet, the software would automatically interpret this as a date and convert it to "1-Mar"[...]For a long time, Microsoft's position was that this was a niche issue affecting a small number of users"

To be fair, this really is a niche issue. For all that I agree with the frustration for Microsoft's terrible behavior in so many other respects, it's hard to fault them for not being immediately responsive to something like this.