Comment 8 for bug 1662132

The list of locations and the list of timezone names are not connected between self. We use QTimeZone to manage timezone data. QTimeZone uses a conversion table derived form the Unicode CLDR data to map between IANA IDs and Windows IDs (details: http://doc.qt.io/qt-5/qtimezone.html#details). Depending on your version of Windows and Qt, this table may not be able to provide a valid conversion, in which "UTC" will be returned.