Issue with Inlines in admin

[rchrd2]

The editor doesn't work with new inlines in the admin that are created with javascript. If you press the "Add a new row" button, the editor shows up, but it doesn't update the hidden textarea. This happens, because the html is not updated correctly. The javascript produces something like this:

</div></trix-toolbar><trix-editor input="id_aboutintrotext_set-__prefix__-text" class="trix-content" contenteditable="" trix-id="2" toolbar="trix-toolbar-2"><div><!--block-->fdssadfdsafdssassa</div></trix-editor></p>

Notice the "__prefix__" is still there.

I was able to work around this by making my own copy of static/admin/js/inlines.js and adding a few lines:

    var updateElementIndex = function(el, prefix, ndx) {
      var id_regex = new RegExp("(" + prefix + "-(\\d+|__prefix__))");
      var replacement = prefix + "-" + ndx;
      if ($(el).prop("for")) {
        $(el).prop("for", $(el).prop("for").replace(id_regex, replacement));
      }
      if (el.id) {
        el.id = el.id.replace(id_regex, replacement);
      }
      if (el.name) {
        el.name = el.name.replace(id_regex, replacement);
      }
      // @HACK(richard) needed for django trix
      if ($(el).attr('input')) {
        $(el).attr('input', $(el).attr('input').replace(id_regex, replacement));
      }
    };

I wonder if there's a way to modify the way this is implemented so it works with django's built-in javascript. If the "for" property is used instead of "input", that could make it work.