Loading multiple font using the same font family on symbian

When on symbian^3 loading fonts in different weights that are defining the same font family (eg. NokiaPureText.ttf and NokiaPureTextBold.ttf ('Nokia Pure') or arial_rg.ttf and arial_bd.ttf ('Arial')) font loading of the second font fails. This prevents us from using both the regular and bold weight in the same application without modifying the font-files.

We are trying to add the fonts by using

fontLoader.addApplicationFont("NokiaPureTextBold.ttf");
fontLoader.addApplicationFont("NokiaPureText.ttf");

but also other approaches (QML, FontLoader ...) failed.