diff --git a/addons/web/static/tests/helpers/mock_env.js b/addons/web/static/tests/helpers/mock_env.js
index 7433fe0e098..00696b41476 100644
--- a/addons/web/static/tests/helpers/mock_env.js
+++ b/addons/web/static/tests/helpers/mock_env.js
@@ -53,7 +53,7 @@ function prepareRegistriesWithCleanup() {
     cloneRegistryWithCleanup(registry.category("command_setup"));
     cloneRegistryWithCleanup(registry.category("view_widgets"));
     cloneRegistryWithCleanup(registry.category("fields"));
-    cloneRegistryWithCleanup(registry.category('wowlToLegacyServiceMappers'));
+    cloneRegistryWithCleanup(registry.category("wowlToLegacyServiceMappers"));
 
     cloneRegistryWithCleanup(registry.category("main_components"));
     cloneRegistryWithCleanup(registry.category("fields"));
@@ -64,7 +64,7 @@ function prepareRegistriesWithCleanup() {
     clearRegistryWithCleanup(registry.category("error_dialogs"));
     clearRegistryWithCleanup(registry.category("favoriteMenu"));
     clearRegistryWithCleanup(registry.category("ir.actions.report handlers"));
-    clearRegistryWithCleanup(registry.category('wowlToLegacyServiceMappers'));
+    clearRegistryWithCleanup(registry.category("wowlToLegacyServiceMappers"));
 
     clearRegistryWithCleanup(registry.category("services"));
     clearServicesMetadataWithCleanup();
@@ -122,9 +122,11 @@ export async function makeTestEnv(config = {}) {
         FormController.prototype.multiClickTime = initialQuickEditDelay;
     });
 
-    const env = makeEnv();
-    owl.Component.env = env;
-    env.config = config.config || {};
+    let env = makeEnv();
     await startServices(env);
+    owl.Component.env = env;
+    if ("config" in config) {
+        env = Object.assign(Object.create(env), { config: config.config });
+    }
     return env;
 }
diff --git a/addons/web/static/tests/search/helpers.js b/addons/web/static/tests/search/helpers.js
index ee1faf90e5b..3c282ef9040 100644
--- a/addons/web/static/tests/search/helpers.js
+++ b/addons/web/static/tests/search/helpers.js
@@ -78,8 +78,9 @@ export async function makeWithSearch(params) {
         </WithSearch>`;
     Parent.components = { Component: params.Component, WithSearch };
 
-    const env = await makeTestEnv({ serverData, mockRPC, config });
-    const parent = await mount(Parent, getFixture(), { env, props });
+    const env = await makeTestEnv({ serverData, mockRPC });
+    const searchEnv = Object.assign(Object.create(env), { config });
+    const parent = await mount(Parent, getFixture(), { env: searchEnv, props });
     const parentNode = parent.__owl__;
     const withSearchNode = getUniqueChild(parentNode);
     const componentNode = getUniqueChild(withSearchNode);
diff --git a/addons/web/static/tests/search/with_search_tests.js b/addons/web/static/tests/search/with_search_tests.js
index 2cb8f966ce9..afd7a1d12aa 100644
--- a/addons/web/static/tests/search/with_search_tests.js
+++ b/addons/web/static/tests/search/with_search_tests.js
@@ -322,6 +322,7 @@ QUnit.module("Search", (hooks) => {
 
         class Parent extends Component {
             setup() {
+                owl.useSubEnv({ config: {} });
                 this.searchState = useState({
                     resModel: "animal",
                     domain: [["type", "=", "carnivorous"]],
diff --git a/addons/web/static/tests/views/helpers.js b/addons/web/static/tests/views/helpers.js
index 0b9495260f5..a78f7b1d8b0 100644
--- a/addons/web/static/tests/views/helpers.js
+++ b/addons/web/static/tests/views/helpers.js
@@ -61,7 +61,7 @@ export async function makeView(params) {
         delete props.searchViewArch;
     }
 
-    const env = await makeTestEnv({ serverData, mockRPC, config });
+    const env = await makeTestEnv({ serverData, mockRPC });
     Object.assign(env, createDebugContext(env)); // This is needed if the views are in debug mode
 
     /** Legacy Environment, for compatibility sakes
@@ -81,7 +81,8 @@ export async function makeView(params) {
     await addLegacyMockEnvironment(env, legacyParams);
 
     const target = getFixture();
-    const view = await mount(View, target, { env, props });
+    const viewEnv = Object.assign(Object.create(env), { config });
+    const view = await mount(View, target, { env: viewEnv, props });
     await mount(MainComponentsContainer, target, { env, props });
 
     const viewNode = view.__owl__;
diff --git a/addons/web/static/tests/views/layout_tests.js b/addons/web/static/tests/views/layout_tests.js
index dcc5a303533..3578b21279c 100644
--- a/addons/web/static/tests/views/layout_tests.js
+++ b/addons/web/static/tests/views/layout_tests.js
@@ -58,8 +58,9 @@ QUnit.module("Views", (hooks) => {
             </Layout>`;
         ToyComponent.components = { Layout };
 
-        const env = await makeTestEnv({ config: {} });
-        await mount(ToyComponent, getFixture(), { env });
+        const env = await makeTestEnv();
+        const toyEnv = Object.assign(Object.create(env), { config: {} });
+        await mount(ToyComponent, getFixture(), { env: toyEnv });
 
         assert.containsOnce(target, ".o_view_sample_data");
         assert.containsNone(target, ".o_control_panel");