right slot on q-card

[MagoSchmidt]

Hi, All! Does anyone have any idea why this simple q-card does not use “right” slot as expected?

    <q-card inline style="width:500px">
      <q-card-title>03/OUT/2017</q-card-title>
        <div slot="subtitle">2ª Aula</div>
        <div slot="right">Biologia</div>
      </q-card-title>
    </q-card>

The annoying result is:

Why “Biologia” is below “2a Aula” and not at right side as expected???

I think I am missing something very simple…

Thank you all very much for any clarification!

[MagoSchmidt]

forget, guys!

closing the q-card-title element twice

thanks to @BenoitRanque