Fix EML in WP 5.3

you need to find

createAttachments: function ()

in enhanced-media-library/js/eml-media-views.js (line ~1100)
and replace it with this:

createAttachments: function() {
            this.attachments = new media.view.Attachments({
                controller: this.controller,
                collection: this.collection,
                selection: this.options.selection,
                model: this.model,
                sortable: this.options.sortable,
                scrollElement: this.options.scrollElement,
                idealColumnWidth: this.options.idealColumnWidth,

                // The single <code>Attachment</code> view to be used in the <code>Attachments</code> view.
                AttachmentView: this.options.AttachmentView
            });

            // Add keydown listener to the instance of the Attachments view
            this.controller.on('attachment:keydown:arrow', _.bind(this.attachments.arrowEvent, this.attachments));
            this.controller.on('attachment:details:shift-tab', _.bind(this.attachments.restoreFocus, this.attachments));

            this.views.add(this.attachments);

            if (this.controller.isModeActive('grid')) {
                this.attachmentsNoResults = new View({
                    controller: this.controller,
                    tagName: 'p'
                });

                this.attachmentsNoResults.$el.addClass('hidden no-media');
                this.attachmentsNoResults.$el.html(l10n.noMedia);

                this.views.add(this.attachmentsNoResults);
            }
        },

at least it works for me