diff --git a/addons/web/static/src/webclient/actions/action_service.js b/addons/web/static/src/webclient/actions/action_service.js
index f9989bdd411..c031c65a319 100644
--- a/addons/web/static/src/webclient/actions/action_service.js
+++ b/addons/web/static/src/webclient/actions/action_service.js
@@ -833,7 +833,17 @@ function makeActionManager(env) {
      */
     function _executeActURLAction(action, options) {
         if (action.target === "self") {
+            let willUnload = false;
+            const onUnload = () => {
+                willUnload = true;
+            };
+            browser.addEventListener("beforeunload", onUnload);
+            env.services.ui.block();
             env.services.router.redirect(action.url);
+            browser.removeEventListener("beforeunload", onUnload);
+            if (!willUnload) {
+                env.services.ui.unblock();
+            }
         } else {
             const w = browser.open(action.url, "_blank");
             if (!w || w.closed || typeof w.closed === "undefined") {
diff --git a/addons/web/static/tests/webclient/actions/url_action_tests.js b/addons/web/static/tests/webclient/actions/url_action_tests.js
index e62ca8813f4..c2d793cbc68 100644
--- a/addons/web/static/tests/webclient/actions/url_action_tests.js
+++ b/addons/web/static/tests/webclient/actions/url_action_tests.js
@@ -36,6 +36,31 @@ QUnit.module("ActionManager", (hooks) => {
         assert.verifySteps(["/my/test/url"]);
     });
 
+    QUnit.test("an 'ir.actions.act_url' with target 'self' blocks the ui", async (assert) => {
+        serviceRegistry.add(
+            "ui",
+            {
+                start() {
+                    return {
+                        block: () => assert.step("block"),
+                        // we can't simulate a page unload in the tests, so in this scenario the
+                        // ui will be unblocked directly (and we thus need to define the unblock
+                        // function)
+                        unblock: () => {},
+                    };
+                },
+            }
+        );
+        setupWebClientRegistries();
+        const env = await makeTestEnv({ serverData });
+        await doAction(env, {
+            type: "ir.actions.act_url",
+            target: "self",
+            url: "/my/test/url",
+        });
+        assert.verifySteps(["block"]);
+    });
+
     QUnit.test("execute an 'ir.actions.act_url' action with onClose option", async (assert) => {
         setupWebClientRegistries();
         patchWithCleanup(browser, {