Horizontal scroll on all pages

Hi! I am helping someone to build their site with this theme and the site acquired a permanent horizontal scrollbar on all pages which we cannot get rid of.

It is caused by this style:

body .has-background {
  padding: unset;
}

Overriding this:

.has-global-padding {
  padding-right: var(--wp--style--root--padding-right);
  padding-left: var(--wp--style--root--padding-left);
}

In fact the body has a background color set in the Customisation UI, but

• There is no way to reset the background color. Once set it can only ever be set to a different color. It is set to #ffffff now, because they didn’t want to have a bg color, just played around with the options and now bg color setting cannot be get rid of.
• Also if they wanted to set a bg color, still the horizontal scroll and full page overflow seem like a bug.

I for now put this in place as a workaround, but I’m suspicious that something is not right with the theme in this regards.

/* Fix horizontal scroll */
body .has-background.has-global-padding {
  padding-right: var(--wp--style--root--padding-right);
  padding-left: var(--wp--style--root--padding-left);
}

Let me know if you need more info from my side and thanks in advance if you look into it!