diff --git a/packages/ui/src/components/chat/ChatContainer.tsx b/packages/ui/src/components/chat/ChatContainer.tsx
index ba96bc75..5a4651a2 100644
--- a/packages/ui/src/components/chat/ChatContainer.tsx
+++ b/packages/ui/src/components/chat/ChatContainer.tsx
@@ -538,6 +538,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
             {t('chat.container.returnToParent.label')}
         </Button>
     ) : null;
+    const promptReadOnly = readOnly || Boolean(parentSession);
 
     React.useEffect(() => {
         if (autoOpenDraft && !currentSessionId && !draftOpen) {
@@ -764,7 +765,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
 							: 'bg-background'
 					)}
 				>
-						{readOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={resumeToLatestInstant} />}
+						{promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={resumeToLatestInstant} />}
 				</div>
 			</div>
         );
@@ -824,7 +825,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
 							: 'bg-background'
 					)}
 				>
-					{readOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={resumeToLatestInstant} />}
+					{promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={resumeToLatestInstant} />}
 				</div>
             </div>
         );
@@ -857,7 +858,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
 							: 'bg-background'
 					)}
 				>
-					{readOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={resumeToLatestInstant} />}
+					{promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={resumeToLatestInstant} />}
 				</div>
             </div>
         );
@@ -905,7 +906,7 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({ autoOpenDraft = tr
                         onClick={navigation.resumeToLatest}
                     />
                 )}
-                {readOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={resumeToLatestInstant} />}
+                {promptReadOnly ? <ReadOnlyPromptBanner /> : <ChatInput scrollToBottom={resumeToLatestInstant} />}
             </div>
 
             <TimelineDialog