diff --git a/src/client/connection.ts b/src/client/connection.ts
index 9de2b92116..e6d980f11a 100644
--- a/src/client/connection.ts
+++ b/src/client/connection.ts
@@ -110,7 +110,7 @@ export class Connection extends EventEmitter {
       if (!callback)
         throw new Error(`Cannot find command to respond: ${id}`);
       this._callbacks.delete(id);
-      if (error)
+      if (error && !result)
         callback.reject(parseError(error));
       else
         callback.resolve(this._replaceGuidsWithChannels(result));
diff --git a/src/dispatchers/dispatcher.ts b/src/dispatchers/dispatcher.ts
index 159021c4ec..45ba25afea 100644
--- a/src/dispatchers/dispatcher.ts
+++ b/src/dispatchers/dispatcher.ts
@@ -281,11 +281,12 @@ export class DispatcherConnection {
       await sdkObject?.instrumentation.onAfterCall(sdkObject, callMetadata);
     }
 
-    const log = validMetadata.collectLogs ? callMetadata.log : undefined;
-    if (callMetadata.error)
-      this.onmessage({ id, error: error, log });
-    else
-      this.onmessage({ id, result: callMetadata.result, log });
+    const response: any = { id };
+    if (callMetadata.result)
+      response.result = callMetadata.result;
+    if (error)
+      response.error = error;
+    this.onmessage(response);
   }
 
   private _replaceDispatchersWithGuids(payload: any): any {
diff --git a/src/dispatchers/frameDispatcher.ts b/src/dispatchers/frameDispatcher.ts
index 29ff6be139..f643174bbc 100644
--- a/src/dispatchers/frameDispatcher.ts
+++ b/src/dispatchers/frameDispatcher.ts
@@ -232,6 +232,8 @@ export class FrameDispatcher extends Dispatcher<Frame, channels.FrameInitializer
     const result = await this._frame.expect(metadata, params.selector, { ...params, expectedValue });
     if (result.received !== undefined)
       result.received = serializeResult(result.received);
+    if (result.pass === !!params.isNot)
+      metadata.error = { error: { name: 'Expect', message: 'Expect failed' } };
     return result;
   }
 }
diff --git a/src/protocol/channels.ts b/src/protocol/channels.ts
index 211bd624f6..dd329524c5 100644
--- a/src/protocol/channels.ts
+++ b/src/protocol/channels.ts
@@ -33,7 +33,6 @@ export type StackFrame = {
 export type Metadata = {
   stack?: StackFrame[],
   apiName?: string,
-  collectLogs?: boolean,
 };
 
 export type Point = {
diff --git a/src/protocol/protocol.yml b/src/protocol/protocol.yml
index 0eb9599f99..8204b8da4b 100644
--- a/src/protocol/protocol.yml
+++ b/src/protocol/protocol.yml
@@ -29,7 +29,6 @@ Metadata:
       type: array?
       items: StackFrame
     apiName: string?
-    collectLogs: boolean?
 
 
 Point:
diff --git a/src/protocol/validator.ts b/src/protocol/validator.ts
index bfe9385dd3..e7e6c3ce6a 100644
--- a/src/protocol/validator.ts
+++ b/src/protocol/validator.ts
@@ -42,7 +42,6 @@ export function createScheme(tChannel: (name: string) => Validator): Scheme {
   scheme.Metadata = tObject({
     stack: tOptional(tArray(tType('StackFrame'))),
     apiName: tOptional(tString),
-    collectLogs: tOptional(tBoolean),
   });
   scheme.Point = tObject({
     x: tNumber,
diff --git a/src/test/expect.ts b/src/test/expect.ts
index f0fb688d4f..f8bab74da6 100644
--- a/src/test/expect.ts
+++ b/src/test/expect.ts
@@ -107,7 +107,6 @@ function wrap(matcherName: string, matcher: any) {
       reportStepError(e);
     }
   };
-  result.displayName = 'expect.' + matcherName;
   return result;
 }
 
diff --git a/src/test/index.ts b/src/test/index.ts
index 6294a7ca01..ad7c81b8b0 100644
--- a/src/test/index.ts
+++ b/src/test/index.ts
@@ -212,6 +212,8 @@ export const test = _baseTest.extend<TestFixtures, WorkerAndFileFixtures>({
       }
       (context as any)._csi = {
         onApiCallBegin: (apiCall: string) => {
+          if (apiCall.startsWith('expect.'))
+            return { userObject: null };
           const step = (testInfo as any)._addStep({
             category: 'pw:api',
             title: apiCall,
diff --git a/src/utils/stackTrace.ts b/src/utils/stackTrace.ts
index 21815165fc..7aaa5db11d 100644
--- a/src/utils/stackTrace.ts
+++ b/src/utils/stackTrace.ts
@@ -62,15 +62,14 @@ export function captureStackTrace(): ParsedStackTrace {
       return null;
     if (frame.file.startsWith('internal'))
       return null;
-    if (frame.file.includes(path.join('node_modules', 'expect')))
-      return null;
     const fileName = path.resolve(process.cwd(), frame.file);
     if (isTesting && fileName.includes(path.join('playwright', 'tests', 'config', 'coverage.js')))
       return null;
     const inClient =
       // Allow fixtures in the reported stacks.
       (!fileName.includes('test/index') && !fileName.includes('test\\index')) && (
-        fileName.startsWith(CLIENT_LIB)
+        frame.file.includes(path.join('node_modules', 'expect'))
+        || fileName.startsWith(CLIENT_LIB)
         || fileName.startsWith(CLIENT_SRC)
         || fileName.startsWith(TEST_LIB)
         || fileName.startsWith(TEST_SRC));
@@ -94,7 +93,15 @@ export function captureStackTrace(): ParsedStackTrace {
   for (let i = 0; i < parsedFrames.length - 1; i++) {
     if (parsedFrames[i].inClient && !parsedFrames[i + 1].inClient) {
       const frame = parsedFrames[i].frame;
-      apiName = frame.function ? frame.function[0].toLowerCase() + frame.function.slice(1) : '';
+      const text = parsedFrames[i].frameText;
+      // expect matchers have the following stack structure:
+      // at __EXTERNAL_MATCHER_TRAP__ (.../index.js:342:30)
+      // at Object.throwingMatcher [as toBeChecked] (.../index.js:343:15)
+      const aliasIndex = text.indexOf('[as ');
+      if (aliasIndex !== -1)
+        apiName = 'expect.' + text.substring(aliasIndex + 4, text.indexOf(']'));
+      else
+        apiName = frame.function ? frame.function[0].toLowerCase() + frame.function.slice(1) : '';
       parsedFrames = parsedFrames.slice(i + 1);
       break;
     }
diff --git a/tests/config/browserTest.ts b/tests/config/browserTest.ts
index b66250f114..c3a5666105 100644
--- a/tests/config/browserTest.ts
+++ b/tests/config/browserTest.ts
@@ -143,6 +143,8 @@ export const playwrightFixtures: Fixtures<PlaywrightTestOptions & PlaywrightTest
         await context.tracing.start({ screenshots: true, snapshots: true });
       (context as any)._csi = {
         onApiCallBegin: (apiCall: string) => {
+          if (apiCall.startsWith('expect.'))
+            return { userObject: null };
           const testInfoImpl = testInfo as any;
           const step = testInfoImpl._addStep({
             category: 'pw:api',
diff --git a/tests/playwright-test/reporter.spec.ts b/tests/playwright-test/reporter.spec.ts
index f0f8f530bf..507dad9a15 100644
--- a/tests/playwright-test/reporter.spec.ts
+++ b/tests/playwright-test/reporter.spec.ts
@@ -229,9 +229,7 @@ test('should report expect steps', async ({ runInlineTest }) => {
     `%% end {\"title\":\"browserContext.newPage\",\"category\":\"pw:api\"}`,
     `%% end {\"title\":\"Before Hooks\",\"category\":\"hook\",\"steps\":[{\"title\":\"browserContext.newPage\",\"category\":\"pw:api\"}]}`,
     `%% begin {\"title\":\"expect.not.toHaveTitle\",\"category\":\"expect\"}`,
-    `%% begin {\"title\":\"object.expect.toHaveTitle(:root)\",\"category\":\"pw:api\"}`,
-    `%% end {\"title\":\"object.expect.toHaveTitle(:root)\",\"category\":\"pw:api\"}`,
-    `%% end {\"title\":\"expect.not.toHaveTitle\",\"category\":\"expect\",\"steps\":[{\"title\":\"object.expect.toHaveTitle(:root)\",\"category\":\"pw:api\"}]}`,
+    `%% end {\"title\":\"expect.not.toHaveTitle\",\"category\":\"expect\"}`,
     `%% begin {\"title\":\"After Hooks\",\"category\":\"hook\"}`,
     `%% begin {\"title\":\"browserContext.close\",\"category\":\"pw:api\"}`,
     `%% end {\"title\":\"browserContext.close\",\"category\":\"pw:api\"}`,