I’ve temporarily solved the issue by implementing the following change in ‘wd-section-stretch’, but please let me know if there is a better way.

[class*=”wd-section-stretch”] {
position: relative;
min-width: calc(98vw – var(–wd-scroll-w));
width: calc(98vw – var(–wd-scroll-w));
left: calc(50% – 50vw + var(–wd-scroll-w) / 2);
}