add_task(async function() {
  await SpecialPowers.flushPrefEnv();
  await SpecialPowers.pushPrefEnv({"set": [
    ["dom.storage_access.enabled", true],
    ["network.cookie.cookieBehavior", BEHAVIOR_REJECT],
    ["privacy.trackingprotection.enabled", false],
    ["privacy.trackingprotection.pbmode.enabled", false],
    ["privacy.trackingprotection.annotate_channels", true],
    ["dom.ipc.processCount", 4],
  ]});

  info("First tab opened");
  let tab = BrowserTestUtils.addTab(gBrowser, TEST_DOMAIN + TEST_PATH + "empty.html");
  gBrowser.selectedTab = tab;

  let browser = gBrowser.getBrowserForTab(tab);
  await BrowserTestUtils.browserLoaded(browser);

  info("Disabling content blocking for this page");
  ContentBlocking.disableForCurrentPage();

  await BrowserTestUtils.browserLoaded(browser);

  await ContentTask.spawn(browser, null, async _ => {
    is(content.document.cookie, "", "No cookie set");
    content.document.cookie = "a=b";
    is(content.document.cookie, "a=b", "Cookie set");
  });

  info("Second tab opened");
  let tab2 = BrowserTestUtils.addTab(gBrowser, TEST_DOMAIN + TEST_PATH + "empty.html");
  gBrowser.selectedTab = tab2;

  let browser2 = gBrowser.getBrowserForTab(tab2);
  await BrowserTestUtils.browserLoaded(browser2);

  await ContentTask.spawn(browser2, null, async _ => {
    is(content.document.cookie, "a=b", "Cookie set");
  });

  info("Removing tabs");
  BrowserTestUtils.removeTab(tab);
  BrowserTestUtils.removeTab(tab2);
});