Update: Plans in Drupal-land have shifted towards Create accessible markup for a drag & drop file upload widget (and ensure there is an accessible alternative interaction) and the original issue slated for D8 has been closed in the meantime.
Original request
This is a follow-up to #1380, the respective issue for https://www.drupal.org/node/2113931 and part of #779
Here's what they ~are~ were aiming for in D8:

GitHub Issue #:
1445
Recent comments
Oh thanx ! I had an "old" text format that I had disabled. I re-enabled this format in the field body with the permissions and the field comes back for editing.
Problem of access to the body field with a simple post
See https://github.com/backdrop/backdrop-issues/issues/7148
Problem of access to the body field with a simple post
I used the theme gin for admin. Perhaps, it's the problem ? I have a color border when i selected the images and of course i used the "ctrl" key.
Small problem with multi import files images.