diff --git a/addons/web/static/src/core/autocomplete/autocomplete.xml b/addons/web/static/src/core/autocomplete/autocomplete.xml
index 9f22692eabc..fef78f82f1c 100644
--- a/addons/web/static/src/core/autocomplete/autocomplete.xml
+++ b/addons/web/static/src/core/autocomplete/autocomplete.xml
@@ -39,7 +39,7 @@
                                 >
                                     <a
                                         href="#"
-                                        class="dropdown-item ui-menu-item-wrapper"
+                                        class="dropdown-item ui-menu-item-wrapper text-truncate"
                                         t-att-class="{ 'ui-state-active': isActiveSourceOption([source_index, option_index]) }"
                                     >
                                         <t t-if="source.optionTemplate">
diff --git a/addons/web/static/tests/views/fields/many2one_field_tests.js b/addons/web/static/tests/views/fields/many2one_field_tests.js
index 6c06bcf1f7e..578a0b7a9a7 100644
--- a/addons/web/static/tests/views/fields/many2one_field_tests.js
+++ b/addons/web/static/tests/views/fields/many2one_field_tests.js
@@ -4093,9 +4093,6 @@ QUnit.module("Fields", (hooks) => {
     });
 
     QUnit.test("many2one dropdown disappears on scroll", async function (assert) {
-        serverData.models.partner.records[0].display_name =
-            "Veeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeery Loooooooooooooooooooooooooooooooooooooooooooong Naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaame";
-
         await makeView({
             type: "form",
             resModel: "partner",
@@ -4113,8 +4110,9 @@ QUnit.module("Fields", (hooks) => {
         assert.containsOnce(target, ".o_field_many2one .dropdown-menu");
 
         const dropdown = document.querySelector(".o_field_many2one .dropdown-menu");
-        await triggerScroll(dropdown, { left: 50 }, false);
-        assert.strictEqual(dropdown.scrollLeft, 50, "a scroll happened");
+        dropdown.style = "max-height: 40px;";
+        await triggerScroll(dropdown, { top: 50 }, false);
+        assert.strictEqual(dropdown.scrollTop, 50, "a scroll happened");
         assert.containsOnce(target, ".o_field_many2one .dropdown-menu");
 
         await triggerScroll(target, { top: 50 });