diff --git a/apps/docs/docs/breaking-changes.md b/apps/docs/docs/breaking-changes.md
deleted file mode 100644
index 80175e29e..000000000
--- a/apps/docs/docs/breaking-changes.md
+++ /dev/null
@@ -1,13 +0,0 @@
-# Breaking changes
-
-## Typebot v6
-
-- List variables now don't automatically display the last item when inserted into a bubble. It was too "magical". Now you can leverage the inline code feature to easily get the last element of a list:
-
-  ```
-  {{={{List var}}.at(-1)=}}
-  ```
-
-  Check out the new [Inline variable formatting section](./editor/variables) for more information.
-
-- Input prefill is now disabled by default. You can still enable it in the [Settings](./editor/settings) tab of your bot.
diff --git a/apps/docs/docs/breaking-changes.mdx b/apps/docs/docs/breaking-changes.mdx
new file mode 100644
index 000000000..a4c8815e3
--- /dev/null
+++ b/apps/docs/docs/breaking-changes.mdx
@@ -0,0 +1,38 @@
+# Breaking changes
+
+## Typebot v6
+
+- List variables now don't automatically display the last item when inserted into a bubble. It was too "magical". Now you can leverage the inline code feature to easily get the last element of a list:
+
+  ```
+  {{={{List var}}.at(-1)=}}
+  ```
+
+  Check out the new [Inline variable formatting section](./editor/variables) for more information.
+
+- Input prefill is now disabled by default. You can still enable it in the [Settings](./editor/settings) tab of your bot.
+
+- `Message sequence` option in the OpenAI block was removed because it was also too "magical" and it. Now I've introduced the `Dialogue` option. For more information:
+
+  <div
+    style={{
+      position: 'relative',
+      paddingBottom: '64.5933014354067%',
+      height: 0,
+    }}
+  >
+    <iframe
+      src="https://www.loom.com/embed/df5d64dd01ca47daa5b7acd18b05a725?sid=e6df2f5b-643c-4175-8351-03e1726b2749"
+      frameBorder={0}
+      webkitallowfullscreen
+      mozallowfullscreen
+      allowFullScreen
+      style={{
+        position: 'absolute',
+        top: 0,
+        left: 0,
+        width: '100%',
+        height: '100%',
+      }}
+    />
+  </div>
diff --git a/packages/bot-engine/startSession.ts b/packages/bot-engine/startSession.ts
index b19bc5f4d..8bce2c4e4 100644
--- a/packages/bot-engine/startSession.ts
+++ b/packages/bot-engine/startSession.ts
@@ -35,6 +35,7 @@ import { defaultSettings } from '@typebot.io/schemas/features/typebot/settings/c
 import { IntegrationBlockType } from '@typebot.io/schemas/features/blocks/integrations/constants'
 import { defaultTheme } from '@typebot.io/schemas/features/typebot/theme/constants'
 import { VisitedEdge } from '@typebot.io/prisma'
+import { env } from '@typebot.io/env'
 
 type StartParams =
   | ({
@@ -273,7 +274,11 @@ const getTypebot = async (startParams: StartParams): Promise<StartTypebot> => {
   if (startParams.type === 'preview' && startParams.typebot)
     return startParams.typebot
 
-  if (startParams.type === 'preview' && !startParams.userId)
+  if (
+    startParams.type === 'preview' &&
+    !startParams.userId &&
+    !env.NEXT_PUBLIC_E2E_TEST
+  )
     throw new TRPCError({
       code: 'UNAUTHORIZED',
       message: 'You need to be authenticated to perform this action',