diff --git a/toolkit/components/normandy/content/AboutPages.jsm b/toolkit/components/normandy/content/AboutPages.jsm
index 406a6cc34d6d..ac9236181e64 100644
--- a/toolkit/components/normandy/content/AboutPages.jsm
+++ b/toolkit/components/normandy/content/AboutPages.jsm
@@ -15,7 +15,6 @@ ChromeUtils.defineModuleGetter(this, "RecipeRunner", "resource://normandy/lib/Re
 var EXPORTED_SYMBOLS = ["AboutPages"];
 
 const SHIELD_LEARN_MORE_URL_PREF = "app.normandy.shieldLearnMoreUrl";
-XPCOMUtils.defineLazyPreferenceGetter(this, "gOptOutStudiesEnabled", "app.shield.optoutstudies.enabled");
 
 
 /**
@@ -193,9 +192,10 @@ XPCOMUtils.defineLazyGetter(this.AboutPages, "aboutStudies", () => {
      */
     sendStudiesEnabled(target) {
       RecipeRunner.checkPrefs();
-      const studiesEnabled = RecipeRunner.enabled && gOptOutStudiesEnabled;
       try {
-        target.messageManager.sendAsyncMessage("Shield:ReceiveStudiesEnabled", { studiesEnabled });
+        target.messageManager.sendAsyncMessage("Shield:ReceiveStudiesEnabled", {
+          studiesEnabled: RecipeRunner.enabled,
+        });
       } catch (err) {
         // The child process might be gone, so no need to throw here.
         Cu.reportError(err);
@@ -237,6 +237,11 @@ XPCOMUtils.defineLazyGetter(this.AboutPages, "aboutStudies", () => {
     getShieldLearnMoreHref() {
       return Services.urlFormatter.formatURLPref(SHIELD_LEARN_MORE_URL_PREF);
     },
+
+    getStudiesEnabled() {
+      RecipeRunner.checkPrefs();
+      return RecipeRunner.enabled;
+    },
   });
 
   return aboutStudies;
diff --git a/toolkit/components/normandy/content/about-studies/about-studies.js b/toolkit/components/normandy/content/about-studies/about-studies.js
index a23c02949171..8ff2d0247b9f 100644
--- a/toolkit/components/normandy/content/about-studies/about-studies.js
+++ b/toolkit/components/normandy/content/about-studies/about-studies.js
@@ -150,7 +150,7 @@ class StudyList extends React.Component {
     return (
       r("div", {},
         r("h2", {}, translations.activeStudiesList),
-        r("ul", { className: "study-list active-study-list" },
+        r("ul", { className: "study-list" },
           activeStudies.map(study => (
             study.type === "addon"
             ? r(AddonStudyListItem, { key: study.name, study, translations })
@@ -158,7 +158,7 @@ class StudyList extends React.Component {
           )),
         ),
         r("h2", {}, translations.completedStudiesList),
-        r("ul", { className: "study-list inactive-study-list" },
+        r("ul", { className: "study-list" },
           inactiveStudies.map(study => (
             study.type === "addon"
             ? r(AddonStudyListItem, { key: study.name, study, translations })
diff --git a/toolkit/components/normandy/lib/RecipeRunner.jsm b/toolkit/components/normandy/lib/RecipeRunner.jsm
index 7fda26999c48..72adf4d0e2c9 100644
--- a/toolkit/components/normandy/lib/RecipeRunner.jsm
+++ b/toolkit/components/normandy/lib/RecipeRunner.jsm
@@ -158,12 +158,7 @@ var RecipeRunner = {
     }
 
     const apiUrl = Services.prefs.getCharPref(API_URL_PREF);
-    if (!apiUrl) {
-      log.warn(`Disabling Shield because ${API_URL_PREF} is not set.`);
-      this.disable();
-      return;
-    }
-    if (!apiUrl.startsWith("https://")) {
+    if (!apiUrl || !apiUrl.startsWith("https://")) {
       log.warn(`Disabling Shield because ${API_URL_PREF} is not an HTTPS url: ${apiUrl}.`);
       this.disable();
       return;
diff --git a/toolkit/components/normandy/test/browser/browser_about_studies.js b/toolkit/components/normandy/test/browser/browser_about_studies.js
index 39463dd6d12a..8cc86a908e26 100644
--- a/toolkit/components/normandy/test/browser/browser_about_studies.js
+++ b/toolkit/components/normandy/test/browser/browser_about_studies.js
@@ -71,7 +71,6 @@ decorate_task(
   }
 );
 
-// Test that the study listing shows studies in the proper order and grouping
 decorate_task(
   AddonStudies.withStudies([
     addonStudyFactory({
@@ -200,19 +199,19 @@ decorate_task(
 
       activeAddonStudy.querySelector(".remove-button").click();
       await ContentTaskUtils.waitForCondition(() => (
-        getStudyRow(doc, addonStudies[0].name).matches(".study.disabled")
+        getStudyRow(doc, addonStudies[0].name).matches(".study--disabled")
       ));
       ok(
-        getStudyRow(doc, addonStudies[0].name).matches(".study.disabled"),
+        getStudyRow(doc, addonStudies[0].name).matches(".study--disabled"),
         "Clicking the remove button updates the UI to show that the study has been disabled."
       );
 
       activePrefStudy.querySelector(".remove-button").click();
       await ContentTaskUtils.waitForCondition(() => (
-        getStudyRow(doc, prefStudies[0].name).matches(".study.disabled")
+        getStudyRow(doc, prefStudies[0].name).matches(".study--disabled")
       ));
       ok(
-        getStudyRow(doc, prefStudies[0].name).matches(".study.disabled"),
+        getStudyRow(doc, prefStudies[0].name).matches(".study--disabled"),
         "Clicking the remove button updates the UI to show that the study has been disabled."
       );
     });
@@ -231,11 +230,10 @@ decorate_task(
   }
 );
 
-// Test that a message is shown when no studies have been run
 decorate_task(
   AddonStudies.withStudies([]),
   withAboutStudies,
-  async function testStudyListingNoStudies(studies, browser) {
+  async function testStudyListing(studies, browser) {
     await ContentTask.spawn(browser, null, async () => {
       const doc = content.document;
       await ContentTaskUtils.waitForCondition(() => doc.querySelectorAll(".study-list-info").length);
@@ -250,25 +248,9 @@ decorate_task(
   }
 );
 
-// Test that the message shown when studies are disabled and studies exist
 decorate_task(
   withAboutStudies,
-  AddonStudies.withStudies([
-    addonStudyFactory({
-      name: "A Fake Add-on Study",
-      active: false,
-      description: "A fake description",
-      studyStartDate: new Date(2018, 0, 4),
-    }),
-  ]),
-  PreferenceExperiments.withMockExperiments([
-    preferenceStudyFactory({
-      name: "B Fake Preference Study",
-      lastSeen: new Date(2018, 0, 5),
-      expired: true,
-    }),
-  ]),
-  async function testStudyListingDisabled(browser, addonStudies, preferenceStudies) {
+  async function testStudyListing(browser) {
     try {
       RecipeRunner.disable();
 
@@ -287,36 +269,4 @@ decorate_task(
       RecipeRunner.checkPrefs();
     }
   }
-);
-
-// Test for bug 1498940 - detects studies disabled when only study opt-out is set
-decorate_task(
-  withPrefEnv({
-    set: [
-      ["datareporting.healthreport.uploadEnabled", true],
-      ["app.normandy.api_url", "https://example.com"],
-      ["app.shield.optoutstudies.enabled", false],
-    ],
-  }),
-  withAboutStudies,
-  AddonStudies.withStudies([]),
-  PreferenceExperiments.withMockExperiments([]),
-  async function testStudyListingStudiesOptOut(browser) {
-    RecipeRunner.checkPrefs();
-    ok(
-      RecipeRunner.enabled,
-      "RecipeRunner should be enabled as a Precondition",
-    );
-
-    await ContentTask.spawn(browser, null, async () => {
-      const doc = content.document;
-      await ContentTaskUtils.waitForCondition(() => doc.querySelector(".info-box-content > span").textContent);
-
-      is(
-        doc.querySelector(".info-box-content > span").textContent,
-        "This is a list of studies that you have participated in. No new studies will run.",
-        "A message is shown when studies are disabled",
-      );
-    });
-  }
-);
+).only();