I’ve been upgrading to Apex 24.2 and so far I’ve upgraded 23 with no issue. One of the upgrade is to use the new date picker, which was upgraded fine in the first 23 apps (first screen shot).
Today I started working on another app and for some unknown reason I’ve found the Date Picker after upgrade to it is display differently (second screen shot, it’s the same on other apps I tried today.
Before yesterday, drop-downs would appear along with the “Today” button in the lower corner.

Now any apps I upgrade they will appear with the month/year dropdowns disabled and no “Today” button.

Below I now see the setting set to “False” for html a-date-picker tag like this: <a-date-picker change-month="false" change-year="false" today-button="false">
I did notice if I switch turn-off the “User Defaults” settings the dropdowns and Today button appear.
But the previous 23 applications all have the setting below, so wondering what could cause this to happen?
While I can simply turn of User Defaults, that would now be an extra step for date field now.