Locale aware not working for me
Hi,
I'm on chrome "Version 76.0.3809.100 (Official Build) (64-bit)" on Manjaro Linux KDE.
My language setting in chrome:

System locale is configured like:

But Datepicker shows wrong date/time format:

I'm not a web/frontend developer, so please let me know if you need further information. I made a quick check on chrome with windows and this seems to work like expected.
On Firefox & Linux is exactly the same issue as described above with chrome.
Hmm, it appears the language is being taken from the System Locale in this case (LANG=en_US.UTF-8), so the US date format is being used. I'm guessing how the JavaScript APIs determine the locale may be browser/platform specific which is unfortunate. You could override the locale using an attribute on the date picker, but then the locale will be fixed for all visitors to the web page.