diff --git a/docs/src/test-fixtures-js.md b/docs/src/test-fixtures-js.md
index 16afe6f25ead8..0646574ab7d40 100644
--- a/docs/src/test-fixtures-js.md
+++ b/docs/src/test-fixtures-js.md
@@ -354,6 +354,8 @@ Playwright Test uses [worker processes](./test-parallel.md) to run test files. S
 
 Below we'll create an `account` fixture that will be shared by all tests in the same worker, and override the `page` fixture to log in to this account for each test. To generate unique accounts, we'll use the [`property: WorkerInfo.workerIndex`] that is available to any test or fixture. Note the tuple-like syntax for the worker fixture - we have to pass `{scope: 'worker'}` so that test runner sets this fixture up once per worker.
 
+In addition to only being run once per worker, worker-scoped fixtures also get a separate timeout equal to the default test timeout. You can change it by passing the `timeout` option. See [fixture timeout](#fixture-timeout) for more details.
+
 ```js title="my-test.ts"
 import { test as base } from '@playwright/test';
 
@@ -434,7 +436,7 @@ export { expect } from '@playwright/test';
 
 ## Fixture timeout
 
-By default, the fixture inherits the timeout value of the test. However, for slow fixtures, especially [worker-scoped](#worker-scoped-fixtures) ones, it is convenient to have a separate timeout. This way you can keep the overall test timeout small, and give the slow fixture more time.
+Fixture is considered to be a part of a test, and so its setup and teardown running time counts towards the test timeout. Therefore, a slow fixture may cause test timeouts. You can set a separate larger timeout for such a fixture, and keep the overall test timeout small.
 
 ```js
 import { test as base, expect } from '@playwright/test';
@@ -451,6 +453,7 @@ test('example test', async ({ slowFixture }) => {
 });
 ```
 
+Unlike regular test-scoped fixtures, each [worker-scoped](#worker-scoped-fixtures) fixture has its own timeout, equal to the test timeout. You can change the timeout for a worker-scoped fixture in the same way.
 
 ## Fixtures-options
 
diff --git a/packages/playwright-core/src/server/trace/recorder/snapshotterInjected.ts b/packages/playwright-core/src/server/trace/recorder/snapshotterInjected.ts
index 86fa015eb3d9e..1a6effdceb058 100644
--- a/packages/playwright-core/src/server/trace/recorder/snapshotterInjected.ts
+++ b/packages/playwright-core/src/server/trace/recorder/snapshotterInjected.ts
@@ -86,6 +86,7 @@ export function frameSnapshotStreamer(snapshotStreamer: string, removeNoScript:
   class Streamer {
     private _lastSnapshotNumber = 0;
     private _staleStyleSheets = new Set<CSSStyleSheet>();
+    private _modifiedStyleSheets = new Set<CSSStyleSheet>();
     private _readingStyleSheet = false;  // To avoid invalidating due to our own reads.
     private _fakeBase: HTMLBaseElement;
     private _observer: MutationObserver;
@@ -105,6 +106,10 @@ export function frameSnapshotStreamer(snapshotStreamer: string, removeNoScript:
       this._interceptNativeMethod(window.CSSGroupingRule.prototype, 'insertRule', invalidateCSSGroupingRule);
       this._interceptNativeMethod(window.CSSGroupingRule.prototype, 'deleteRule', invalidateCSSGroupingRule);
       this._interceptNativeGetter(window.CSSGroupingRule.prototype, 'cssRules', invalidateCSSGroupingRule);
+      this._interceptNativeSetter(window.StyleSheet.prototype, 'disabled', (sheet: StyleSheet) => {
+        if (sheet instanceof CSSStyleSheet)
+          this._invalidateStyleSheet(sheet as CSSStyleSheet);
+      });
       this._interceptNativeAsyncMethod(window.CSSStyleSheet.prototype, 'replace', (sheet: CSSStyleSheet) => this._invalidateStyleSheet(sheet));
 
       this._fakeBase = document.createElement('base');
@@ -191,6 +196,18 @@ export function frameSnapshotStreamer(snapshotStreamer: string, removeNoScript:
       });
     }
 
+    private _interceptNativeSetter(obj: any, prop: string, cb: (thisObj: any, result: any) => void) {
+      const descriptor = Object.getOwnPropertyDescriptor(obj, prop)!;
+      Object.defineProperty(obj, prop, {
+        ...descriptor,
+        set: function(value: any) {
+          const result = descriptor.set!.call(this, value);
+          cb(this, value);
+          return result;
+        },
+      });
+    }
+
     private _handleMutations(list: MutationRecord[]) {
       for (const mutation of list)
         ensureCachedData(mutation.target).attributesCached = undefined;
@@ -200,6 +217,8 @@ export function frameSnapshotStreamer(snapshotStreamer: string, removeNoScript:
       if (this._readingStyleSheet)
         return;
       this._staleStyleSheets.add(sheet);
+      if (sheet.href !== null)
+        this._modifiedStyleSheets.add(sheet);
     }
 
     private _updateStyleElementStyleSheetTextIfNeeded(sheet: CSSStyleSheet, forceText?: boolean): string | undefined {
@@ -309,6 +328,8 @@ export function frameSnapshotStreamer(snapshotStreamer: string, removeNoScript:
     private _getSheetText(sheet: CSSStyleSheet): string {
       this._readingStyleSheet = true;
       try {
+        if (sheet.disabled)
+          return '';
         const rules: string[] = [];
         for (const rule of sheet.cssRules)
           rules.push(rule.cssText);
@@ -614,7 +635,7 @@ export function frameSnapshotStreamer(snapshotStreamer: string, removeNoScript:
         collectionTime: 0,
       };
 
-      for (const sheet of this._staleStyleSheets) {
+      for (const sheet of this._modifiedStyleSheets) {
         if (sheet.href === null)
           continue;
         const content = this._updateLinkStyleSheetTextIfNeeded(sheet, snapshotNumber);
diff --git a/packages/playwright-core/src/utils/isomorphic/trace/snapshotRenderer.ts b/packages/playwright-core/src/utils/isomorphic/trace/snapshotRenderer.ts
index 64efaebb36281..fc8d420efb368 100644
--- a/packages/playwright-core/src/utils/isomorphic/trace/snapshotRenderer.ts
+++ b/packages/playwright-core/src/utils/isomorphic/trace/snapshotRenderer.ts
@@ -193,20 +193,24 @@ export class SnapshotRenderer {
     let result = sameFrameResource ?? otherFrameResource;
     if (result && method.toUpperCase() === 'GET') {
       // Patch override if necessary.
-      for (const o of snapshot.resourceOverrides) {
-        if (url === o.url && o.sha1) {
-          result = {
-            ...result,
-            response: {
-              ...result.response,
-              content: {
-                ...result.response.content,
-                _sha1: o.sha1,
-              }
-            },
-          };
-          break;
-        }
+      let override = snapshot.resourceOverrides.find(o => o.url === url);
+      if (override?.ref) {
+        // "ref" means use the same content as "ref" snapshots ago.
+        const index = this._index - override.ref;
+        if (index >= 0 && index < this._snapshots.length)
+          override = this._snapshots[index].resourceOverrides.find(o => o.url === url);
+      }
+      if (override?.sha1) {
+        result = {
+          ...result,
+          response: {
+            ...result.response,
+            content: {
+              ...result.response.content,
+              _sha1: override.sha1,
+            }
+          },
+        };
       }
     }
 
diff --git a/packages/playwright/src/worker/fixtureRunner.ts b/packages/playwright/src/worker/fixtureRunner.ts
index 6329afaff7fb6..a8d43206cbb7c 100644
--- a/packages/playwright/src/worker/fixtureRunner.ts
+++ b/packages/playwright/src/worker/fixtureRunner.ts
@@ -55,10 +55,13 @@ class Fixture {
       title,
       phase: 'setup',
       location,
-      slot: this.registration.timeout === undefined ? undefined : {
+      slot: this.registration.timeout !== undefined ? {
         timeout: this.registration.timeout,
         elapsed: 0,
-      }
+      } : this.registration.scope === 'worker' ? {
+        timeout: this.runner.workerFixtureTimeout,
+        elapsed: 0,
+      } : undefined,
     };
     this._teardownDescription = { ...this._setupDescription, phase: 'teardown' };
   }
@@ -179,6 +182,7 @@ export class FixtureRunner {
   private testScopeClean = true;
   pool: FixturePool | undefined;
   instanceForId = new Map<string, Fixture>();
+  workerFixtureTimeout = 0;
 
   setPool(pool: FixturePool) {
     if (!this.testScopeClean)
diff --git a/packages/playwright/src/worker/workerMain.ts b/packages/playwright/src/worker/workerMain.ts
index ea70b028a7638..d1289a46e5aec 100644
--- a/packages/playwright/src/worker/workerMain.ts
+++ b/packages/playwright/src/worker/workerMain.ts
@@ -212,6 +212,7 @@ export class WorkerMain extends ProcessRunner {
     this._config = config;
     this._project = project;
     this._poolBuilder = PoolBuilder.createForWorker(this._project);
+    this._fixtureRunner.workerFixtureTimeout = this._project.project.timeout;
   }
 
   async runTestGroup(runPayload: ipc.RunPayload) {
diff --git a/tests/library/trace-viewer.spec.ts b/tests/library/trace-viewer.spec.ts
index 0dee62a814a7b..0e03f7fb1d094 100644
--- a/tests/library/trace-viewer.spec.ts
+++ b/tests/library/trace-viewer.spec.ts
@@ -2178,6 +2178,8 @@ test('should respect CSSOM changes', async ({ runAndTrace, page, server }) => {
     await page.goto(server.EMPTY_PAGE);
     await page.setContent('<link rel="stylesheet" href="style.css"><button>Hello</button>');
     await page.evaluate(() => { (document.styleSheets[0].cssRules[0] as any).style.color = 'blue'; });
+    await page.evaluate(() => '1 + 1');
+    await page.evaluate(() => { document.styleSheets[0].disabled = true; });
   });
 
   const frame1 = await traceViewer.snapshotFrame('Set content', 0);
@@ -2196,6 +2198,11 @@ test('should respect CSSOM changes', async ({ runAndTrace, page, server }) => {
   await expect(frame6.locator('button')).toHaveCSS('color', 'rgb(255, 0, 0)');
   const frame7 = await traceViewer.snapshotFrame('Evaluate', 4);
   await expect(frame7.locator('button')).toHaveCSS('color', 'rgb(0, 0, 255)');
+  const frame8 = await traceViewer.snapshotFrame('Evaluate', 5);
+  await traceViewer.page.waitForTimeout(1000); // give it time to render wrong color
+  await expect(frame8.locator('button')).toHaveCSS('color', 'rgb(0, 0, 255)');
+  const frame9 = await traceViewer.snapshotFrame('Evaluate', 6);
+  await expect(frame9.locator('button')).toHaveCSS('color', 'rgb(0, 0, 0)');
 });
 
 test('should preserve custom doctype', async ({ runAndTrace, page }) => {
diff --git a/tests/playwright-test/fixture-errors.spec.ts b/tests/playwright-test/fixture-errors.spec.ts
index 51c928f156760..ca1c6d7177ec8 100644
--- a/tests/playwright-test/fixture-errors.spec.ts
+++ b/tests/playwright-test/fixture-errors.spec.ts
@@ -46,18 +46,18 @@ test('should handle worker fixture timeout', async ({ runInlineTest }) => {
     'a.spec.ts': `
       import { test as base, expect } from '@playwright/test';
       const test = base.extend({
-        timeout: [async ({}, runTest) => {
+        slowFixture: [async ({}, runTest) => {
           await runTest();
           await new Promise(f => setTimeout(f, 100000));
         }, { scope: 'worker' }]
       });
 
-      test('fails', async ({timeout}) => {
+      test('fails', async ({ slowFixture }) => {
       });
     `
   }, { timeout: 500 });
   expect(result.exitCode).toBe(1);
-  expect(result.output).toContain('Worker teardown timeout of 500ms exceeded while tearing down "timeout".');
+  expect(result.output).toContain('Fixture "slowFixture" timeout of 500ms exceeded during teardown.');
 });
 
 test('should handle worker fixture error', async ({ runInlineTest }) => {
@@ -607,7 +607,7 @@ test('should report worker fixture teardown with debug info', async ({ runInline
   expect(result.exitCode).toBe(1);
   expect(result.passed).toBe(20);
   expect(result.output).toContain([
-    'Worker teardown timeout of 1000ms exceeded while tearing down "fixture".',
+    'Fixture "fixture" timeout of 1000ms exceeded during teardown.',
     '',
     'Failed worker ran 20 tests, last 10 tests were:',
     'a.spec.ts:10:9 › good10',
diff --git a/tests/playwright-test/reporter-html.spec.ts b/tests/playwright-test/reporter-html.spec.ts
index 128e3c417e4c2..c3014f1102304 100644
--- a/tests/playwright-test/reporter-html.spec.ts
+++ b/tests/playwright-test/reporter-html.spec.ts
@@ -3357,7 +3357,7 @@ for (const useIntermediateMergeReport of [true, false] as const) {
           - text: Use shard weights to
           - link "rebalance your shards":
             - /url: https://playwright.dev/docs/test-sharding#rebalancing-shards
-          - text: ": @linux: npx playwright test --shard-weights=67:33:0 @mac: npx playwright test --shard-weights=67:33"
+          - text: /@linux. npx playwright test --shard-weights=\\d+:\\d+:\\d+ @mac. npx playwright test --shard-weights=\\d+:\\d+/
       `);
     });
   });
diff --git a/tests/playwright-test/timeout.spec.ts b/tests/playwright-test/timeout.spec.ts
index 9d6001078d0c2..e1d41ef330fb7 100644
--- a/tests/playwright-test/timeout.spec.ts
+++ b/tests/playwright-test/timeout.spec.ts
@@ -532,7 +532,7 @@ test('should report up to 3 timeout errors', async ({ runInlineTest }) => {
   expect(result.failed).toBe(1);
   expect(result.output).toContain('Test timeout of 1000ms exceeded.');
   expect(result.output).toContain('Test timeout of 1000ms exceeded while running "afterEach" hook.');
-  expect(result.output).toContain('Worker teardown timeout of 1000ms exceeded while tearing down "autoWorker".');
+  expect(result.output).toContain('Fixture "autoWorker" timeout of 1000ms exceeded during teardown.');
 });
 
 test('should complain when worker fixture times out during worker cleanup', async ({ runInlineTest }) => {
@@ -668,3 +668,39 @@ test('test.setTimeout should be able to change custom fixture timeout', async ({
   expect(result.failed).toBe(1);
   expect(result.output).toContain(`Fixture "foo" timeout of 100ms exceeded during setup`);
 });
+
+test('worker fixtures should each have a separate time slot', async ({ runInlineTest }) => {
+  const result = await runInlineTest({
+    'a.spec.ts': `
+      import { test as base, expect } from '@playwright/test';
+      const test = base.extend({
+        worker: [async ({}, use) => {
+          console.log('%%before worker');
+          await new Promise(f => setTimeout(f, 3000));
+          await use('hey');
+          console.log('%%after worker');
+        }, { scope: 'worker' }],
+        auto: [async ({}, use) => {
+          console.log('%%before auto');
+          await new Promise(f => setTimeout(f, 3000));
+          await use('hey');
+          console.log('%%after auto');
+        }, { scope: 'worker', auto: true }],
+      });
+      test('passes', async ({ worker }) => {
+        console.log('%%before test');
+        await new Promise(f => setTimeout(f, 3000));
+        console.log('%%after test');
+      });
+    `
+  }, { timeout: 5000 });
+  expect(result.exitCode).toBe(0);
+  expect(result.outputLines).toEqual([
+    'before auto',
+    'before worker',
+    'before test',
+    'after test',
+    'after worker',
+    'after auto',
+  ]);
+});