diff --git a/addons/web/static/src/legacy/legacy_promise_error_handler.js b/addons/web/static/src/legacy/legacy_promise_error_handler.js
index 0fc7cddfeda..0b5eab6c0a1 100644
--- a/addons/web/static/src/legacy/legacy_promise_error_handler.js
+++ b/addons/web/static/src/legacy/legacy_promise_error_handler.js
@@ -18,7 +18,7 @@ import { registry } from "@web/core/registry";
  * @returns {boolean}
  */
 function legacyRejectPromiseHandler(env, error, originalError) {
-    if (error.name === "UncaughtPromiseError") {
+    if (error.name.startsWith("UncaughtPromiseError")) {
         const isLegitError = originalError && originalError instanceof Error;
         const isLegacyRPC = originalError && originalError.legacy;
         if (!isLegitError && !isLegacyRPC) {
diff --git a/addons/web/static/src/legacy/legacy_rpc_error_handler.js b/addons/web/static/src/legacy/legacy_rpc_error_handler.js
index 9321da2fa89..15158225b8d 100644
--- a/addons/web/static/src/legacy/legacy_rpc_error_handler.js
+++ b/addons/web/static/src/legacy/legacy_rpc_error_handler.js
@@ -44,4 +44,4 @@ function legacyRPCErrorHandler(env, error, originalError) {
     }
     return false;
 }
-errorHandlerRegistry.add("legacyRPCErrorHandler", legacyRPCErrorHandler, { sequence: 2 });
+errorHandlerRegistry.add("legacyRPCErrorHandler", legacyRPCErrorHandler, { sequence: 97 });
diff --git a/addons/web/static/src/views/form/form_error_dialog/form_error_dialog.js b/addons/web/static/src/views/form/form_error_dialog/form_error_dialog.js
index f08d67ad123..9f9a9a40826 100644
--- a/addons/web/static/src/views/form/form_error_dialog/form_error_dialog.js
+++ b/addons/web/static/src/views/form/form_error_dialog/form_error_dialog.js
@@ -55,4 +55,4 @@ function formSaveErrorHandler(env, error, originalError) {
         return true;
     }
 }
-errorHandlerRegistry.add("formSaveErrorHandler", formSaveErrorHandler, { sequence: 1 });
+errorHandlerRegistry.add("formSaveErrorHandler", formSaveErrorHandler);
diff --git a/addons/web/static/tests/qunit.js b/addons/web/static/tests/qunit.js
index 62810adc320..a640ba5bb74 100644
--- a/addons/web/static/tests/qunit.js
+++ b/addons/web/static/tests/qunit.js
@@ -559,8 +559,8 @@ export function setupQUnit() {
         if (originalError instanceof Error) {
             originalError.errorEvent = ev;
             await completeUncaughtError(uncaughtError, originalError);
+            originalError.stacktrace = uncaughtError.traceback;
         }
-        originalError.stacktrace = uncaughtError.traceback;
         onError(originalError);
     });
 
@@ -577,8 +577,8 @@ export function setupQUnit() {
         if (originalError instanceof Error) {
             originalError.errorEvent = ev;
             await completeUncaughtError(uncaughtError, originalError);
+            originalError.stack = uncaughtError.traceback;
         }
-        originalError.stack = uncaughtError.traceback;
         onUnhandledRejection(originalError);
     });
 }
diff --git a/addons/web/static/tests/webclient/actions/window_action_tests.js b/addons/web/static/tests/webclient/actions/window_action_tests.js
index d3dbf7f3ad1..2a6d0fe9118 100644
--- a/addons/web/static/tests/webclient/actions/window_action_tests.js
+++ b/addons/web/static/tests/webclient/actions/window_action_tests.js
@@ -2631,4 +2631,77 @@ QUnit.module("ActionManager", (hooks) => {
 
         assert.containsOnce(target, ".o_pivot_view .o_view_sample_data");
     });
+
+    QUnit.test("click on breadcrumb of a deleted record", async function (assert) {
+        serviceRegistry.add("error", errorService);
+        // In tests we catch unhandledrejection of promises rejected with something that isn't an
+        // error (see tests/qunit.js). In this scenario, with the legacy basic_model, the promise
+        // is rejected with undefined, so without the following lines, we can't reproduce the issue,
+        // which was that the error handlers were executed in a wrong order, and one of them crashed.
+        const windowUnhandledReject = window.onunhandledrejection;
+        window.onunhandledrejection = null;
+        registerCleanup(() => {
+            window.onunhandledrejection = windowUnhandledReject;
+        });
+
+        const handler = (ev) => {
+            // need to preventDefault to remove error from console (so python test pass)
+            ev.preventDefault();
+        };
+        window.addEventListener("unhandledrejection", handler);
+        registerCleanup(() => window.removeEventListener("unhandledrejection", handler));
+        patchWithCleanup(QUnit, {
+            onUnhandledRejection: () => {},
+        });
+
+        serverData.views["partner,false,form"] = `
+            <form>
+                <button type="action" name="3" string="Open Action 3" class="my_btn"/>
+            </form>`;
+
+        const webClient = await createWebClient({ serverData });
+        await doAction(webClient, 3);
+        assert.containsOnce(target, ".o_list_view");
+
+        await click(target.querySelector(".o_data_row .o_data_cell"));
+        assert.containsOnce(target, ".o_form_view");
+
+        await click(target.querySelector(".my_btn"));
+        assert.containsOnce(target, ".o_list_view");
+
+        await click(target.querySelector(".o_data_row .o_data_cell"));
+        assert.containsOnce(target, ".o_form_view");
+        assert.deepEqual(getNodesTextContent(target.querySelectorAll(".breadcrumb-item")), [
+            "Partners",
+            "First record",
+            "Partners",
+            "First record",
+        ]);
+
+        // open action menu and delete
+        await cpHelpers.toggleActionMenu(target);
+        await cpHelpers.toggleMenuItem(target, "Delete");
+        assert.containsOnce(target, ".o_dialog");
+
+        // confirm
+        await click(target.querySelector(".o_dialog .modal-footer .btn-primary"));
+        assert.containsOnce(target, ".o_form_view");
+        assert.deepEqual(getNodesTextContent(target.querySelectorAll(".breadcrumb-item")), [
+            "Partners",
+            "First record",
+            "Partners",
+            "Second record",
+        ]);
+
+        // click on "First record" in breadcrumbs, which doesn't exist anymore
+        await click(target.querySelectorAll(".breadcrumb-item a")[1]);
+        await nextTick();
+        assert.containsOnce(target, ".o_form_view");
+        assert.deepEqual(getNodesTextContent(target.querySelectorAll(".breadcrumb-item")), [
+            "Partners",
+            "First record",
+            "Partners",
+            "Second record",
+        ]);
+    });
 });