in karavan-space/src/designer/route/element/DslElementHeader.tsx [113:121]
function getHasWideChildrenElement(childrenInfo: [boolean, number, boolean, number, number]) {
const [hasStepsField, stepsChildrenCount, hasNonStepsFields, nonStepChildrenCount, childrenCount] = childrenInfo;
if (step.dslName === 'SetHeadersDefinition') return false;
else if (isHorizontal() && stepsChildrenCount > 1) return true;
else if (hasStepsField && stepsChildrenCount > 0 && hasNonStepsFields && nonStepChildrenCount > 0) return true;
else if (!hasStepsField && hasNonStepsFields && childrenCount > 1) return true;
else if (hasStepsField && stepsChildrenCount > 0 && hasNonStepsFields && childrenCount > 1) return true;
else return false;
}