Vine embed size issue

Hi,

I’m embedding a Vine video with :

[embed size="small" type="simple"]https://vine.co/v/bjHh0zHdgZT[/embed]

It works but it doesn’t consider the size parameter. I tried “huge”,”big” and “small”, it’s always the same size. Do you have any idea why ?

I’m using the free wordpress.com online version.

Thanks.