A white band appears in the preview

Hi guys! so I have been having this problem with a couple of items on my pages. When published or in preview, this white band appears between the sections. Does anyone know why this happens and how to fix it?

hope I did not miss anything, but it seems that you’ve done some changes to the page already, along with this, possible reason for this, is the conflict between the grid cell size and section size, for example like here:

I’m not sure if it was expected by the design from your side, but it could be it