Breaking upload, had to uninstall

Hi, I ran into the same issue and found a quick fix here : https://www.ads-software.com/support/topic/potential-fix-wordpress-5-3-conflict-compatibility-error/

2 lines need to be edited in js/eml-media-views.js for the plugin to work with 5.3

Better for me than letting go of this great tool but YMMV.