FIX: Can't cook queued posts when markdown-it is enabled.

app/assets/javascripts/discourse/components/queued-post.js.es6

@@ -1,6 +1,8 @@
 import { propertyEqual } from 'discourse/lib/computed';
+import { default as computed } from 'ember-addons/ember-computed-decorators';
 import { bufferedProperty } from 'discourse/mixins/buffered-content';
 import { popupAjaxError } from 'discourse/lib/ajax-error';
+import { cookAsync } from 'discourse/lib/text';
 
 function updateState(state, opts) {
   opts = opts || {};
@@ -21,6 +23,12 @@ export default Ember.Component.extend(bufferedProperty('post'), {
   editing: propertyEqual('post', 'currentlyEditing'),
   _confirmDelete: updateState('rejected', {deleteUser: true}),
 
+  @computed('post.raw')
+  cooked(raw) {
+    cookAsync(raw).then(cooked => this.set('cooked', cooked));
+    return raw;
+  },
+
   actions: {
     approve: updateState('approved'),
     reject: updateState('rejected'),

app/assets/javascripts/discourse/templates/components/queued-post.hbs

@@ -34,7 +34,7 @@
       {{#if editing}}
         {{d-editor value=buffered.raw}}
       {{else}}
-        {{{cook-text post.raw}}}
+        {{{cooked}}}
       {{/if}}
     </div>