When Qt or QtCreator encounters a private unicode, it searches the available fonts for any font that maps the private unicode and will display the mapped symbol.

This is an issue if a customer wants to use a private unicode and it is being automatically mapped to an undesired symbol from a font that the customer is not using.

A workaround currently exists using QFont::NoFontMerge to disable fontmerging on the displaying element's text component.

See attached a list of private unicodes, some of which Qt will automatically map.