diff --git a/packages/puppeteer-core/src/common/Connection.ts b/packages/puppeteer-core/src/common/Connection.ts
index f9ea618c422..a25fdfdc890 100644
--- a/packages/puppeteer-core/src/common/Connection.ts
+++ b/packages/puppeteer-core/src/common/Connection.ts
@@ -600,7 +600,13 @@ function createProtocolErrorMessage(object: {
   error: {message: string; data: any; code: number};
 }): string {
   let message = `${object.error.message}`;
-  if ('data' in object.error) {
+  // TODO: remove the type checks when we stop connecting to BiDi with a CDP
+  // client.
+  if (
+    object.error &&
+    typeof object.error === 'object' &&
+    'data' in object.error
+  ) {
     message += ` ${object.error.data}`;
   }
   return message;
diff --git a/test/TestExpectations.json b/test/TestExpectations.json
index 71661fdf6e6..f08febaa58f 100644
--- a/test/TestExpectations.json
+++ b/test/TestExpectations.json
@@ -783,13 +783,13 @@
     "testIdPattern": "[launcher.spec] Launcher specs Puppeteer Browser.disconnect should reject navigation when browser closes",
     "platforms": ["darwin", "linux", "win32"],
     "parameters": ["webDriverBiDi"],
-    "expectations": ["PASS"]
+    "expectations": ["FAIL", "PASS"]
   },
   {
     "testIdPattern": "[launcher.spec] Launcher specs Puppeteer Browser.disconnect should reject waitForSelector when browser closes",
     "platforms": ["darwin", "linux", "win32"],
     "parameters": ["webDriverBiDi"],
-    "expectations": ["PASS"]
+    "expectations": ["FAIL", "PASS"]
   },
   {
     "testIdPattern": "[launcher.spec] Launcher specs Puppeteer Puppeteer.executablePath returns executablePath for channel",
@@ -891,7 +891,7 @@
     "testIdPattern": "[locator.spec] Locator Locator.change should work for contenteditable",
     "platforms": ["darwin", "linux", "win32"],
     "parameters": ["webDriverBiDi"],
-    "expectations": ["PASS"]
+    "expectations": ["FAIL", "PASS"]
   },
   {
     "testIdPattern": "[locator.spec] Locator Locator.change should work for inputs",
@@ -1125,7 +1125,7 @@
     "testIdPattern": "[page.spec] Page Page.waitForNetworkIdle should work with aborted requests",
     "platforms": ["darwin", "linux", "win32"],
     "parameters": ["webDriverBiDi"],
-    "expectations": ["FAIL", "TIMEOUT"]
+    "expectations": ["FAIL", "PASS", "TIMEOUT"]
   },
   {
     "testIdPattern": "[proxy.spec] *",
@@ -1463,11 +1463,17 @@
     "parameters": ["cdp", "firefox"],
     "expectations": ["FAIL", "PASS"]
   },
+  {
+    "testIdPattern": "[chromiumonly.spec] Chromium-Specific Launcher tests Puppeteer.launch |browserURL| option should be able to connect using browserUrl, with and without trailing slash",
+    "platforms": ["darwin", "linux", "win32"],
+    "parameters": ["firefox", "webDriverBiDi"],
+    "expectations": ["FAIL", "PASS"]
+  },
   {
     "testIdPattern": "[click.spec] Page.click should click offscreen buttons",
     "platforms": ["darwin", "linux", "win32"],
     "parameters": ["firefox", "webDriverBiDi"],
-    "expectations": ["TIMEOUT", "FAIL"]
+    "expectations": ["FAIL", "TIMEOUT"]
   },
   {
     "testIdPattern": "[click.spec] Page.click should click on checkbox label and toggle",
@@ -2135,6 +2141,12 @@
     "parameters": ["firefox", "webDriverBiDi"],
     "expectations": ["FAIL"]
   },
+  {
+    "testIdPattern": "[launcher.spec] Launcher specs Puppeteer Puppeteer.launch userDataDir option should restore cookies",
+    "platforms": ["darwin", "linux", "win32"],
+    "parameters": ["firefox", "webDriverBiDi"],
+    "expectations": ["FAIL", "PASS", "TIMEOUT"]
+  },
   {
     "testIdPattern": "[launcher.spec] Launcher specs Puppeteer Puppeteer.launch userDataDir option should restore state",
     "platforms": ["darwin", "linux", "win32"],