Hi,

1. Please provide a link to both product pages from your first post screenshots.

3. Try to add the following code snippet to the Custom CSS area in Theme Settings.

body .basel-navigation .menu > li.menu-item-design-full-width .sub-menu > li, 
body .basel-navigation .menu > li.menu-item-design-sized .sub-menu > li {
	width: 100%;
	margin-right: 0;
}

Regards