Hello,
I have S5 accordion menu published and it only provides the option to expand or collapse the active level. For example, your parent menu item is "Mics Links" and you are viewing an article associated with a the sub menu item "Microsoft." /mics-links/Microsoft. The Mics Links can be expanded and collapsed, but no option to expand the other parent items is present. (No little gray arrow)
I'm using corpway on a inrtanet site so I cannot provide a URL.. Here are photos from Demo and my site.