JS Error and upload failed

Yes, not sure of the cause yet, but there is a workaround here:
https://www.ads-software.com/support/topic/js-bug-prevents-uploading-media-in-pagepost-editor?replies=11#post-6860868

TL;DR;

Comment out line 171 in post-thumbnail-editor.php

it works!!!

Is there a plan or ETA when this will be resolved? I would prefer to not edit Plugin files as it will get overwritten on update.

Without editing the plugin, add this in your theme’s functions.php:
remove_action('dbx_post_advanced', 'pte_edit_form_hook_redirect');