Custom Media Modal and uploading

Found 2 other questions similar (almost the same?) as mine:

• Trigger refresh for new media manager in 3.5
• Media Modal not updating with file upload

And found the solution in one of the comments in the latter. It links to a ticket and the last post has the solution to it:

var customMedia = wp.media({
    state: 'customState',
    states: [
        new wp.media.controller.Library({
            id: 'customState', 
            title: 'Library',
            library: wp.media.query({
                type: 'image',
                category: 'icon' // adding a filter to ajax_query_attachments_args
            }),
            multiple: false,
            date: false,
        })
    ]
});

// This will add the item uploaded to the list of attachments in the moodal 
customMedia.states.get('library').get('library').observe( wp.Uploader.queue );  

This won’t fix the issue when opening the modal again. It doesn’t show the images that were just added.