diff --git a/packages/stream_chat_flutter/CHANGELOG.md b/packages/stream_chat_flutter/CHANGELOG.md
index d1fdf4cb..268cf593 100644
--- a/packages/stream_chat_flutter/CHANGELOG.md
+++ b/packages/stream_chat_flutter/CHANGELOG.md
@@ -6,6 +6,8 @@
   error on pre-Flutter 3.10.0 versions.
 - [[#1605]](https://github.com/GetStream/stream-chat-flutter/issues/1605) Fixed Null exception is thrown on message list
   for unread messages when `ScrollToBottomButton` is pressed.
+- [[#1615]](https://github.com/GetStream/stream-chat-flutter/issues/1615) Fixed `StreamAttachmentPickerBottomSheet` not
+  able to find the `StreamChatTheme` when used in nested MaterialApp.
 
 ✅ Added
 
@@ -50,7 +52,6 @@
   )
   ```
 
-
 ## 6.3.0
 
 🐞 Fixed
diff --git a/packages/stream_chat_flutter/lib/src/message_input/stream_message_input.dart b/packages/stream_chat_flutter/lib/src/message_input/stream_message_input.dart
index 3d80c14f..c7a8a277 100644
--- a/packages/stream_chat_flutter/lib/src/message_input/stream_message_input.dart
+++ b/packages/stream_chat_flutter/lib/src/message_input/stream_message_input.dart
@@ -782,7 +782,6 @@ class StreamMessageInputState extends State<StreamMessageInput>
   Future<void> _onAttachmentButtonPressed() async {
     final attachments = await showStreamAttachmentPickerModalBottomSheet(
       context: context,
-      useRootNavigator: true,
       allowedTypes: widget.allowedAttachmentPickerTypes,
       initialAttachments: _effectiveController.attachments,
     );