Brazillian letters that don't show in nicknames

Things like ã, ó, ç and à don't show in the nickname.

My Steam nickname is Busão Galático (Galactic Bus in portuguese), but it only shows Buso Galtico.

Thats not a major problem, it is just a small problem that have to be fixed, and considering that there are many brazillians and people from other countries playing the game, i think it is important to let them have there nicknames right.