Did anyone ever resolve the date format issue where the date defaults to day/mo/year format?

What's the issue with the preference? In my experience it works as expected.

On my call to support I was told developers will have to make the change.  If you also have this issue, please make a feature request.  The issue is better described as the inability to choose a format for the date at the global level.  QB no longer is able to parse the PC's system time settings and match them - as of 4/5/2022, or as shown in QB 05/04/22.  The credit card companies and the bank all use Month/Day/Year, but QB likes Day/Month/Year.  Makes it difficult to go back and forth when the date formats don't match.

There's no issue here as far as I can tell.

QuickBooks uses your computer's date format as a base for how it displays dates. If your computer is set to DD/MM/YYYY or another similar date format where the day leads, then that's what you'll see in QuickBooks.

It has always been this way and will probably never change.

Are you seeing something different? If so, what is your computer's date format?

System time vs. QB time formats in attached screen shot

Problem solved:

Control Panel | Date & time | Change date and time | Change calendar settings | Formats

There you can select the format you want Windows (and QB) to display.

Apparently, the upgrade from W10 to Windows 11 had made the change, and this is how to change it back.

Now to get rid of that EVIL advertisement that when you check please do not show this again, shows this again.

Yes, correct.  And QB will follow.