diff --git a/ui/src/App.test.js b/ui/src/App.test.js
index 7085a972c..4ebd36029 100644
--- a/ui/src/App.test.js
+++ b/ui/src/App.test.js
@@ -12,6 +12,7 @@ beforeEach(() => {
 });
 
 afterEach(() => {
+  jest.restoreAllMocks();
   window.history.pushState({}, "App", "/");
 });
 
diff --git a/ui/src/AppBoot.test.js b/ui/src/AppBoot.test.js
index 16f8a7866..b8f22376c 100644
--- a/ui/src/AppBoot.test.js
+++ b/ui/src/AppBoot.test.js
@@ -11,6 +11,7 @@ beforeAll(() => {
 });
 
 afterEach(() => {
+  jest.restoreAllMocks();
   // reset sentry state before each mock, that's the only way to revert
   // Sentry.init() that I found
   global.__SENTRY__ = {};
diff --git a/ui/src/Components/FaviconBadge/index.test.js b/ui/src/Components/FaviconBadge/index.test.js
index 79a946669..0930333c3 100644
--- a/ui/src/Components/FaviconBadge/index.test.js
+++ b/ui/src/Components/FaviconBadge/index.test.js
@@ -11,6 +11,10 @@ beforeEach(() => {
   alertStore = new AlertStore([]);
 });
 
+afterEach(() => {
+  jest.restoreAllMocks();
+});
+
 const MountedFaviconBadge = () => {
   return mount(<FaviconBadge alertStore={alertStore} />);
 };
diff --git a/ui/src/Components/Fetcher/index.test.js b/ui/src/Components/Fetcher/index.test.js
index 1f3610e5d..365381f5e 100644
--- a/ui/src/Components/Fetcher/index.test.js
+++ b/ui/src/Components/Fetcher/index.test.js
@@ -34,6 +34,7 @@ beforeEach(() => {
 afterEach(() => {
   jest.clearAllTimers();
   jest.clearAllMocks();
+  jest.restoreAllMocks();
   clear();
 });
 
diff --git a/ui/src/Components/Grid/AlertGrid/AlertGroup/Silence/index.test.js b/ui/src/Components/Grid/AlertGrid/AlertGroup/Silence/index.test.js
index d7d0392fe..e54a0c0bf 100644
--- a/ui/src/Components/Grid/AlertGrid/AlertGroup/Silence/index.test.js
+++ b/ui/src/Components/Grid/AlertGrid/AlertGroup/Silence/index.test.js
@@ -77,6 +77,7 @@ beforeEach(() => {
 });
 
 afterEach(() => {
+  jest.restoreAllMocks();
   // reset Date() to current time
   clear();
 });
diff --git a/ui/src/Components/Grid/AlertGrid/index.test.js b/ui/src/Components/Grid/AlertGrid/index.test.js
index b9b3fce88..c789f9ba6 100644
--- a/ui/src/Components/Grid/AlertGrid/index.test.js
+++ b/ui/src/Components/Grid/AlertGrid/index.test.js
@@ -18,6 +18,10 @@ beforeEach(() => {
   silenceFormStore = new SilenceFormStore();
 });
 
+afterEach(() => {
+  jest.restoreAllMocks();
+});
+
 const ShallowAlertGrid = () => {
   return shallow(
     <AlertGrid
diff --git a/ui/src/Components/Grid/UpgradeNeeded/index.test.js b/ui/src/Components/Grid/UpgradeNeeded/index.test.js
index 340eb2edf..1a4691faf 100644
--- a/ui/src/Components/Grid/UpgradeNeeded/index.test.js
+++ b/ui/src/Components/Grid/UpgradeNeeded/index.test.js
@@ -13,6 +13,7 @@ beforeEach(() => {
 
 afterEach(() => {
   jest.clearAllTimers();
+  jest.restoreAllMocks();
 });
 
 describe("<UpgradeNeeded />", () => {
diff --git a/ui/src/Components/MainModal/MainModalContent.test.js b/ui/src/Components/MainModal/MainModalContent.test.js
index 85ec3e0fd..dabf4e7c4 100644
--- a/ui/src/Components/MainModal/MainModalContent.test.js
+++ b/ui/src/Components/MainModal/MainModalContent.test.js
@@ -18,6 +18,10 @@ beforeEach(() => {
   onHide.mockClear();
 });
 
+afterEach(() => {
+  jest.restoreAllMocks();
+});
+
 const FakeModal = () => {
   return mount(
     <MainModalContent
diff --git a/ui/src/Components/NavBar/FilterInput/index.test.js b/ui/src/Components/NavBar/FilterInput/index.test.js
index 0f7ca2c45..900e022ff 100644
--- a/ui/src/Components/NavBar/FilterInput/index.test.js
+++ b/ui/src/Components/NavBar/FilterInput/index.test.js
@@ -18,6 +18,10 @@ beforeEach(() => {
   fetch.resetMocks();
 });
 
+afterEach(() => {
+  jest.restoreAllMocks();
+});
+
 const MountedInput = () => {
   return mount(
     <FilterInput alertStore={alertStore} settingsStore={settingsStore} />
diff --git a/ui/src/Components/SilenceModal/LabelNameInput.test.js b/ui/src/Components/SilenceModal/LabelNameInput.test.js
index 1e37739a9..4508f2859 100644
--- a/ui/src/Components/SilenceModal/LabelNameInput.test.js
+++ b/ui/src/Components/SilenceModal/LabelNameInput.test.js
@@ -26,6 +26,10 @@ beforeEach(() => {
   ];
 });
 
+afterEach(() => {
+  jest.restoreAllMocks();
+});
+
 const ShallowLabelNameInput = isValid => {
   return shallow(<LabelNameInput matcher={matcher} isValid={isValid} />);
 };
diff --git a/ui/src/ErrorBoundary.test.js b/ui/src/ErrorBoundary.test.js
index 22ab56150..5ef9ed1e7 100644
--- a/ui/src/ErrorBoundary.test.js
+++ b/ui/src/ErrorBoundary.test.js
@@ -8,12 +8,16 @@ import * as Sentry from "@sentry/browser";
 
 import { ErrorBoundary } from "./ErrorBoundary";
 
+let consoleSpy;
+
 beforeEach(() => {
   jest.useFakeTimers();
+  consoleSpy = jest.spyOn(console, "error").mockImplementation(() => {});
 });
 
 afterEach(() => {
   jest.clearAllTimers();
+  jest.restoreAllMocks();
 });
 
 const FailingComponent = () => {
@@ -30,9 +34,6 @@ const MountedFailingComponent = () => {
 
 describe("<ErrorBoundary />", () => {
   it("matches snapshot", () => {
-    const consoleSpy = jest
-      .spyOn(console, "error")
-      .mockImplementation(() => {});
     const tree = MountedFailingComponent();
     expect(toDiffableHtml(tree.html())).toMatchSnapshot();
     expect(consoleSpy).toHaveBeenCalled();
@@ -65,9 +66,6 @@ describe("<ErrorBoundary />", () => {
   });
 
   it("calls window.location.reload after 60s", () => {
-    const consoleSpy = jest
-      .spyOn(console, "error")
-      .mockImplementation(() => {});
     const reloadSpy = jest.spyOn(global.window.location, "reload");
     MountedFailingComponent();
     jest.runTimersToTime(1000 * 61);
@@ -76,7 +74,6 @@ describe("<ErrorBoundary />", () => {
   });
 
   it("reloadSeconds is 40 after 20s with multiple exceptions", () => {
-    jest.spyOn(console, "error").mockImplementation(() => {});
     const tree = MountedFailingComponent();
     const instance = tree.instance();
 
diff --git a/ui/src/Stores/AlertStore.test.js b/ui/src/Stores/AlertStore.test.js
index 22b446e02..90e3473a2 100644
--- a/ui/src/Stores/AlertStore.test.js
+++ b/ui/src/Stores/AlertStore.test.js
@@ -14,6 +14,7 @@ beforeEach(() => {
 });
 
 afterEach(() => {
+  jest.restoreAllMocks();
   // wipe REACT_APP_BACKEND_URI env on each run as it's used by some tests
   delete process.env.REACT_APP_BACKEND_URI;
 });
@@ -279,6 +280,7 @@ describe("AlertStore.fetch", () => {
   });
 
   it("unapplied filters are marked as applied on fetch error", async () => {
+    jest.spyOn(console, "trace").mockImplementation(() => {});
     fetch.mockReject("Fetch error");
     const store = new AlertStore([NewUnappliedFilter("foo")]);
     store.filters.values[0].applied = false;