In editor the content of the block is larger than the block width

[abecuwedahive]

Hi,
As you can see on this screenshot, there's an issue:
The content of the section block exceed the block itself on the sides, and then it takes more than 100% of the editor screen. I don't know if this is due to the way the

and the

works but I notice I have this issue on several sites. I'm not sure if this is only a issue for me.

What would you suggest to do to correct it ?

Thanks a lot !