Save button ready too early

[tlartaud]

While we are uploading files (See attachment – uploading.png) and we click on button DONE before all files are uploaded and ready to REMOVE, the post is created with missing files: the one that aren’t loaded yet. The button DONE should be active only when all files are loaded and ready serverside.

See https://wp-customerarea.com/support/topic/file-enanchement-uploading-downloading-issue/