SharePoint Date Time 24 hour clock format not reflecting when editing list item


Some Recent Changes by Microsoft in SharePoint Date Time Column has caused it to stop working correctly.

There are two approaches to create date.

1. Classic Way : By going through list settings

2. Modern View : From Create a column in a list or library - SharePoint (


Problem : When the regional setting is set to 24 hour clock, we see that date doesn't show correctly  for approach 1 (image1), but shows correctly for approach 2(image2) (but with some additional bugs as show in screenshot)





apporach 2 works better than approach one, as it doesnt show am or pm , but still shows 12 hour clock when selecting dates.



If we switch the list exp to classic mode, 24 hour clock works in approach 1.

It will also work in IE for approach 1

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