diff --git a/ghost/admin/app/adapters/page.js b/ghost/admin/app/adapters/page.js
index 568b33cb8b..a98e64d903 100644
--- a/ghost/admin/app/adapters/page.js
+++ b/ghost/admin/app/adapters/page.js
@@ -1,7 +1,8 @@
 import ApplicationAdapter from 'ghost-admin/adapters/application';
+import {ALL_POST_INCLUDES} from './post';
 
 export default class Page extends ApplicationAdapter {
-    // posts and pages now include everything by default
+    // posts and pages now include everything except post_revisions by default
     buildIncludeURL(store, modelName, id, snapshot, requestType, query) {
         const url = this.buildURL(modelName, id, snapshot, requestType, query);
         const parsedUrl = new URL(url);
@@ -16,6 +17,13 @@ export default class Page extends ApplicationAdapter {
             parsedUrl.searchParams.append('convert_to_lexical', convertToLexical);
         }
 
+        // on create/update we need to explicitly request post_revisions to be included
+        // so we can compare and create a new one later if needed but that means we
+        // have to specify every post include option
+        if (requestType === 'createRecord' || requestType === 'updateRecord') {
+            parsedUrl.searchParams.append('include', ALL_POST_INCLUDES);
+        }
+
         return parsedUrl.toString();
     }
 
diff --git a/ghost/admin/app/adapters/post.js b/ghost/admin/app/adapters/post.js
index 940b4a5718..0c96b75ffc 100644
--- a/ghost/admin/app/adapters/post.js
+++ b/ghost/admin/app/adapters/post.js
@@ -1,5 +1,17 @@
 import ApplicationAdapter from 'ghost-admin/adapters/application';
 
+export const ALL_POST_INCLUDES = [
+    'tags',
+    'authors',
+    'authors.roles',
+    'email',
+    'tiers',
+    'newsletter',
+    'count.clicks',
+    'post_revisions',
+    'post_revisions.author'
+].join(',');
+
 export default class Post extends ApplicationAdapter {
     buildIncludeURL(store, modelName, id, snapshot, requestType, query) {
         const url = this.buildURL(modelName, id, snapshot, requestType, query);
@@ -29,7 +41,14 @@ export default class Post extends ApplicationAdapter {
             const convertToLexical = snapshot.adapterOptions.convertToLexical;
             parsedUrl.searchParams.append('convert_to_lexical', convertToLexical);
         }
-        
+
+        // on create/update we need to explicitly request post_revisions to be included
+        // so we can compare and create a new one later if needed but that means we
+        // have to specify every post include option
+        if (requestType === 'createRecord' || requestType === 'updateRecord') {
+            parsedUrl.searchParams.append('include', ALL_POST_INCLUDES);
+        }
+
         return parsedUrl.toString();
     }
 
diff --git a/ghost/admin/app/routes/lexical-editor/edit.js b/ghost/admin/app/routes/lexical-editor/edit.js
index 0c29809a9b..2a6079b699 100644
--- a/ghost/admin/app/routes/lexical-editor/edit.js
+++ b/ghost/admin/app/routes/lexical-editor/edit.js
@@ -1,4 +1,5 @@
 import AuthenticatedRoute from 'ghost-admin/routes/authenticated';
+import {ALL_POST_INCLUDES} from '../../adapters/post';
 import {pluralize} from 'ember-inflector';
 import {inject as service} from '@ember/service';
 export default class EditRoute extends AuthenticatedRoute {
@@ -28,7 +29,9 @@ export default class EditRoute extends AuthenticatedRoute {
         let query = {
             // eslint-disable-next-line camelcase
             id: post_id,
-            include: 'tags,authors,authors.roles,email,tiers,newsletter,count.clicks,post_revisions,post_revisions.author'
+            // we need to explicitly request post_revisions which means we need
+            // to specify every post include option
+            include: ALL_POST_INCLUDES
         };
 
         const records = await this.store.query(modelName, query);