Someone with this problem, when we have a custom CSS in the layout, when we launch the designer in the store and close directly and open without refresh the page the custom css no work, the standard layout is loaded. Exemple here : Check
Launch the designer and close it, and re open the designer you'll see the standard layout and not the custome layout css. How to solved it ? Thanks
Can you move your style to inside pp-container instead of the topmost layer and let's see.
That will be nice.