Adding filter to media library modal

Hi ! I don’t know if it’s a bug or if it’s not implemented yet, but I’m facing an issue with the plugin. I’m trying to display the category filter inside the media library modal (when i’m editing a page or post), but the only thing I can see is, on the right panel, the checkboxes, I don’t see any dropdown filter in the top part of the modal. Can someone help me have this dropdown ? My client carefully put medias in the right categories, but then, he can’t sort/filter when editing the page/post