Languages that doesnt support Unicode

Hi everyone. As you can see in the screenshot I wrote the same thing twice ( i sent the first) (i wrote the greek alphabet) but it looks different when I send it its almost possible to read it. This is happening ine very every every every version of minecraft and in every every every every PC that I tested it. I dont know exactly the cause of this bug but I thinks its because greek language (and few language more) doesnt support Unicodet+ so please add Unicode