Digit Grouping Separator Not working in Excel export

Not sure if this is a bug… anyone else have the issue?

I have a grid that is set to export to Excel Using the Initial Module = Excel option.
I have a few INT fields… Student ID and such, where the digits are being separated by a comma.
Student ID: 1223 is showing is 1,223 for example.

Normally I would clear out the comma in the “digit grouping separator” field and the issue would be taken care of… but after the last update, the comma still persists.
Any ideas?

I believe that is an excel thing. It interprets any number-like thing as a number. Is a way to export it in quotes or something to convince excel it is text?