diff --git a/packages/extension/package.json b/packages/extension/package.json
index a25a2c8..9193e53 100644
--- a/packages/extension/package.json
+++ b/packages/extension/package.json
@@ -1,7 +1,7 @@
 {
     "name": "@page-agent/ext",
     "private": true,
-    "version": "0.1.0-b.2",
+    "version": "0.1.0-b3",
     "type": "module",
     "scripts": {
         "dev": "wxt",
diff --git a/packages/extension/src/agent/RemotePageController.background.ts b/packages/extension/src/agent/RemotePageController.background.ts
index 7e8a042..d9a7d0b 100644
--- a/packages/extension/src/agent/RemotePageController.background.ts
+++ b/packages/extension/src/agent/RemotePageController.background.ts
@@ -7,12 +7,12 @@ export function handlePageControlMessage(
 	message: { type: 'PAGE_CONTROL'; action: string; payload: any; targetTabId: number },
 	sender: chrome.runtime.MessageSender,
 	sendResponse: (response: unknown) => void
-): boolean {
+): true | undefined {
 	const { action, payload, targetTabId } = message
 
 	if (action === 'get_my_tab_id') {
 		sendResponse({ tabId: sender.tab?.id || null })
-		return false
+		return
 	}
 
 	chrome.tabs
diff --git a/packages/extension/src/agent/RemotePageController.content.ts b/packages/extension/src/agent/RemotePageController.content.ts
index e98de33..b200fd3 100644
--- a/packages/extension/src/agent/RemotePageController.content.ts
+++ b/packages/extension/src/agent/RemotePageController.content.ts
@@ -53,12 +53,12 @@ export function initPageController() {
 		}
 	}, 1_000)
 
-	chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
+	chrome.runtime.onMessage.addListener((message, sender, sendResponse): true | undefined => {
 		if (message.type !== 'PAGE_CONTROL') {
-			sendResponse({
-				success: false,
-				error: `[RemotePageController.ContentScript]: Invalid message type: ${message.type}`,
-			})
+			// sendResponse({
+			// 	success: false,
+			// 	error: `[RemotePageController.ContentScript]: Invalid message type: ${message.type}`,
+			// })
 			return
 		}
 
diff --git a/packages/extension/src/agent/TabsController.background.ts b/packages/extension/src/agent/TabsController.background.ts
index c336e71..aec87d8 100644
--- a/packages/extension/src/agent/TabsController.background.ts
+++ b/packages/extension/src/agent/TabsController.background.ts
@@ -7,7 +7,7 @@ export function handleTabControlMessage(
 	message: { type: 'TAB_CONTROL'; action: TabAction; payload: any },
 	sender: chrome.runtime.MessageSender,
 	sendResponse: (response: unknown) => void
-): boolean {
+): true | undefined {
 	const { action, payload } = message
 
 	switch (action as TabAction) {
@@ -102,6 +102,6 @@ export function handleTabControlMessage(
 
 		default:
 			sendResponse({ error: `Unknown action: ${action}` })
-			return false
+			return
 	}
 }
diff --git a/packages/extension/src/agent/TabsController.ts b/packages/extension/src/agent/TabsController.ts
index d889b79..8e3b3a6 100644
--- a/packages/extension/src/agent/TabsController.ts
+++ b/packages/extension/src/agent/TabsController.ts
@@ -39,9 +39,11 @@ export class TabsController extends EventTarget {
 
 		await this.updateCurrentTabId(this.currentTabId)
 
-		const tabChangeHandler = (message: any) => {
-			if (message.type !== 'TAB_CHANGE')
-				throw new Error(`[TabsController]: Invalid message type: ${message.type}`)
+		const tabChangeHandler = (message: any): void => {
+			if (message.type !== 'TAB_CHANGE') {
+				// throw new Error(`[TabsController]: Invalid message type: ${message.type}`)
+				return
+			}
 
 			if (message.action === 'created') {
 				const tab = message.payload.tab as chrome.tabs.Tab
diff --git a/packages/extension/src/entrypoints/sidepanel/components/cards.tsx b/packages/extension/src/entrypoints/sidepanel/components/cards.tsx
index 296d6fb..73e7003 100644
--- a/packages/extension/src/entrypoints/sidepanel/components/cards.tsx
+++ b/packages/extension/src/entrypoints/sidepanel/components/cards.tsx
@@ -249,10 +249,10 @@ function StepCard({ event }: { event: AgentStepEvent }) {
 								)}
 							</p>
 							<p className="text-[11px] text-muted-foreground/70 grid grid-cols-[auto_1fr] gap-1.5">
-								<div className="">└</div>
-								<div className="wrap-anywhere break-all line-clamp-1 hover:line-clamp-3">
+								<span className="">└</span>
+								<span className="wrap-anywhere break-all line-clamp-1 hover:line-clamp-3">
 									{event.action.output}
-								</div>
+								</span>
 							</p>
 						</div>
 					</div>