Google+ not using featured image

Hello,

It seems to me AIOSP is correctly defining my blog’s featured images as og:image metadata, but for some reason they’re not being used by Google+ unless the image itself appears on the post’s header.

For example, this was shared correctly with the image of the dog:

https://macmagazine.com.br/2017/05/23/aproveite-o-festival-de-fones-de-ouvido-e-caixas-de-som-na-mm-store-com-ate-63-de-desconto/

However, in this post, although the laptop’s image is set as featured, Google+ used the autor’s avatar:

https://macmagazine.com.br/2017/05/23/microsoft-anuncia-novo-surface-pro-com-novidades-internas-e-caneta-melhorada-huawei-apresenta-seus-mac-digo-matebooks/

Any way to fix that?

Thanks.