Fix tasklist for epics

app/assets/javascripts/issue_show/components/app.vue

@@ -250,6 +250,7 @@ export default {
         :description-text="state.descriptionText"
         :updated-at="state.updatedAt"
         :task-status="state.taskStatus"
+        :issuable-type="issuableType"
       />
       <edited-component
         v-if="hasUpdated"

app/assets/javascripts/issue_show/components/description.vue

@@ -22,6 +22,11 @@
         required: false,
         default: '',
       },
+      issuableType: {
+        type: String,
+        required: false,
+        default: 'issue',
+      },
     },
     data() {
       return {
@@ -48,7 +53,7 @@
         if (this.canUpdate) {
           // eslint-disable-next-line no-new
           new TaskList({
-            dataType: 'issue',
+            dataType: this.issuableType,
             fieldName: 'description',
             selector: '.detail-page-description',
           });

changelogs/unreleased-ee/fix-epic-tasklist.yml

+---
+title: Fix tasklist for epics
+merge_request:
+author:
+type: fixed

ee/app/assets/javascripts/epics/epic_show/components/epic_show_app.vue

@@ -112,6 +112,7 @@
           :can-destroy="canDestroy"
           :endpoint="endpoint"
           :issuable-ref="issuableRef"
+          issuable-type="epic"
           :initial-title-html="initialTitleHtml"
           :initial-title-text="initialTitleText"
           :initial-description-html="initialDescriptionHtml"