What this code does is to check if there's a child element under the dropdown with current state ('.w--current' class added by webflow), and apply the same class to the parent dropdown element.
We start by adding this short code to the Project's custom code section, so this will work globally on any page in the project.. We can also add this manually to every page we have a sub level dropdown menu.
var hasActiveLink = $(this).find('.w--current').length > 0;
Try avoiding using "Transition: All". It is heavy on the browser's engine.
Convert the Workspaces dropdown to an open sidebar with custom order.
Change Webflow's Slider to act as a "regular" grid block on desktop, but go back to Slider on Tablet and smaller screens.