diff --git a/browser/base/content/test/general/browser.ini b/browser/base/content/test/general/browser.ini
index f8bf8866f2a..8aab62da6ac 100644
--- a/browser/base/content/test/general/browser.ini
+++ b/browser/base/content/test/general/browser.ini
@@ -427,6 +427,8 @@ skip-if = e10s
 [browser_tabs_isActive.js]
 skip-if = e10s # Bug 1100664 - test relies on linkedBrowser.docShell
 [browser_tabs_owner.js]
+[browser_testOpenNewRemoteTabsFromNonRemoteBrowsers.js]
+skip-if = !e10s && os == "linux" # Bug 994541 - Need OMTC enabled by default on Linux, or else we get blocked by an alert dialog when opening e10s window.
 [browser_trackingUI.js]
 support-files =
   trackingPage.html
diff --git a/browser/base/content/test/general/browser_testOpenNewRemoteTabsFromNonRemoteBrowsers.js b/browser/base/content/test/general/browser_testOpenNewRemoteTabsFromNonRemoteBrowsers.js
new file mode 100644
index 00000000000..dcdf203e4d5
--- /dev/null
+++ b/browser/base/content/test/general/browser_testOpenNewRemoteTabsFromNonRemoteBrowsers.js
@@ -0,0 +1,124 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+const OPEN_LOCATION_PREF = "browser.link.open_newwindow";
+const NON_REMOTE_PAGE = "about:welcomeback";
+
+Cu.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
+
+function frame_script() {
+  content.document.body.innerHTML = `
+    <a href="about:home" target="_blank" id="testAnchor">Open a window</a>
+  `;
+
+  let element = content.document.getElementById("testAnchor");
+  element.click();
+}
+
+/**
+ * Takes some browser in some window, and forces that browser
+ * to become non-remote, and then navigates it to a page that
+ * we're not supposed to be displaying remotely. Returns a
+ * Promise that resolves when the browser is no longer remote.
+ */
+function prepareNonRemoteBrowser(aWindow, browser) {
+  browser.loadURI(NON_REMOTE_PAGE);
+  return waitForDocLoadComplete(browser);
+}
+
+registerCleanupFunction(() => {
+  Services.prefs.clearUserPref(OPEN_LOCATION_PREF);
+});
+
+/**
+ * Test that if we open a new tab from a link in a non-remote
+ * browser in an e10s window, that the new tab will load properly.
+ */
+add_task(function* test_new_tab() {
+  let normalWindow = yield promiseOpenAndLoadWindow({
+    remote: true
+  }, true);
+  let privateWindow = yield promiseOpenAndLoadWindow({
+    remote: true,
+    private: true,
+  }, true);
+
+  for (let testWindow of [normalWindow, privateWindow]) {
+    yield promiseWaitForFocus(testWindow);
+    let testBrowser = testWindow.gBrowser.selectedBrowser;
+    info("Preparing non-remote browser");
+    yield prepareNonRemoteBrowser(testWindow, testBrowser);
+    info("Non-remote browser prepared - sending frame script");
+
+    // Get our framescript ready
+    let mm = testBrowser.messageManager;
+    mm.loadFrameScript("data:,(" + frame_script.toString() + ")();", true);
+
+    let tabOpenEvent = yield waitForNewTabEvent(testWindow.gBrowser);
+    let newTab = tabOpenEvent.target;
+
+    yield promiseTabLoadEvent(newTab);
+
+    // Our framescript opens to about:home which means that the
+    // tab should eventually become remote.
+    ok(newTab.linkedBrowser.isRemoteBrowser,
+       "The opened browser never became remote.");
+
+    testWindow.gBrowser.removeTab(newTab);
+  }
+
+  normalWindow.close();
+  privateWindow.close();
+});
+
+/**
+ * Test that if we open a new window from a link in a non-remote
+ * browser in an e10s window, that the new window is not an e10s
+ * window. Also tests with a private browsing window.
+ */
+add_task(function* test_new_window() {
+  let normalWindow = yield promiseOpenAndLoadWindow({
+    remote: true
+  }, true);
+  let privateWindow = yield promiseOpenAndLoadWindow({
+    remote: true,
+    private: true,
+  }, true);
+
+  // Fiddle with the prefs so that we open target="_blank" links
+  // in new windows instead of new tabs.
+  Services.prefs.setIntPref(OPEN_LOCATION_PREF,
+                            Ci.nsIBrowserDOMWindow.OPEN_NEWWINDOW);
+
+  for (let testWindow of [normalWindow, privateWindow]) {
+    yield promiseWaitForFocus(testWindow);
+    let testBrowser = testWindow.gBrowser.selectedBrowser;
+    yield prepareNonRemoteBrowser(testWindow, testBrowser);
+
+    // Get our framescript ready
+    let mm = testBrowser.messageManager;
+    mm.loadFrameScript("data:,(" + frame_script.toString() + ")();", true);
+
+    // Click on the link in the browser, and wait for the new window.
+    let {subject: newWindow} =
+      yield promiseTopicObserved("browser-delayed-startup-finished");
+
+    is(PrivateBrowsingUtils.isWindowPrivate(testWindow),
+       PrivateBrowsingUtils.isWindowPrivate(newWindow),
+       "Private browsing state of new window does not match the original!");
+
+    let newTab = newWindow.gBrowser.selectedTab;
+
+    yield promiseTabLoadEvent(newTab);
+
+    // Our framescript opens to about:home which means that the
+    // tab should eventually become remote.
+    ok(newTab.linkedBrowser.isRemoteBrowser,
+       "The opened browser never became remote.");
+    newWindow.close();
+  }
+
+  normalWindow.close();
+  privateWindow.close();
+});
diff --git a/browser/base/content/test/general/head.js b/browser/base/content/test/general/head.js
index a4fffd65df2..8b5c89c6e8c 100644
--- a/browser/base/content/test/general/head.js
+++ b/browser/base/content/test/general/head.js
@@ -123,6 +123,23 @@ function promiseWaitForEvent(object, eventName, capturing = false, chrome = fals
   });
 }
 
+/**
+ * Allows setting focus on a window, and waiting for that window to achieve
+ * focus.
+ *
+ * @param aWindow
+ *        The window to focus and wait for.
+ *
+ * @return {Promise}
+ * @resolves When the window is focused.
+ * @rejects Never.
+ */
+function promiseWaitForFocus(aWindow) {
+  return new Promise((resolve) => {
+    waitForFocus(resolve, aWindow);
+  });
+}
+
 function getTestPlugin(aName) {
   var pluginName = aName || "Test Plug-in";
   var ph = Cc["@mozilla.org/plugin/host;1"].getService(Ci.nsIPluginHost);
@@ -611,6 +628,21 @@ function promiseTabLoadEvent(tab, url, eventType="load")
   return deferred.promise;
 }
 
+/**
+ * Returns a Promise that resolves once a new tab has been opened in
+ * a xul:tabbrowser.
+ *
+ * @param aTabBrowser
+ *        The xul:tabbrowser to monitor for a new tab.
+ * @return {Promise}
+ *        Resolved when the new tab has been opened.
+ * @resolves to the TabOpen event that was fired.
+ * @rejects Never.
+ */
+function waitForNewTabEvent(aTabBrowser) {
+  return promiseWaitForEvent(aTabBrowser.tabContainer, "TabOpen");
+}
+
 function assertWebRTCIndicatorStatus(expected) {
   let ui = Cu.import("resource:///modules/webrtcUI.jsm", {}).webrtcUI;
   let expectedState = expected ? "visible" : "hidden";
@@ -784,3 +816,26 @@ function promiseAutocompleteResultPopup(inputText, win = window) {
 
   return promiseSearchComplete(win);
 }
+
+/**
+ * Allows waiting for an observer notification once.
+ *
+ * @param aTopic
+ *        Notification topic to observe.
+ *
+ * @return {Promise}
+ * @resolves An object with subject and data properties from the observed
+ *           notification.
+ * @rejects Never.
+ */
+function promiseTopicObserved(aTopic)
+{
+  return new Promise((resolve) => {
+    Services.obs.addObserver(
+      function PTO_observe(aSubject, aTopic, aData) {
+        Services.obs.removeObserver(PTO_observe, aTopic);
+        resolve({subject: aSubject, data: aData});
+      }, aTopic, false);
+  });
+}
+