Hi, it seems that "intl" extension solves my issue. Thanks @ramrajone !
I'll give it a look to a bunch of tickets other than the one I was looking at, but in that accented characters are now shown correctly so this makes me think there is no matter anymore.
@ntozier
just to complete the issue with the info requested: We are speaking of a xampp env on Windows 2016, with PHP 5.6, Maria DB and Apache 2.4.
OsTicket is a 1.11 release.
Thanks,
Marco