Encoding problems in qml-example on gdp master using a RPI2/3

I tried to install the GDP master on a Raspberry Pi3 with the official 7inch touchscreen. It works pretty well, but i get some enconding problems in some qt applications :

• Audiomanager_monitor works correctly
• qml-example is weird.

I join a picture to make understanding my problem easier.

+ Same error on RPI2 and with faytech monitor (see comments below)

Thanks.