Post grid in full content

Hi,
I’m using spectra since recently and I found a strange problem…

I create a post with different spectra containers, and this post display is very nice, and works perfectly.
But when I use a post grid with the content option “show the full post” on an other page to display all my posts as a blog, the flex display seems to be broken.

Here is my post https://popote.jeuxdevilains.com/creation-une-nouvelle-machine-se-met-en-route/

And this is the display as a post grid with “full post” option :

I tried different options to configure the flex display on my containers, but nothing change.

Do you have an idea to fix that ?

Thanks