diff --git a/addons/web/static/src/search/filter_menu/custom_filter_item.xml b/addons/web/static/src/search/filter_menu/custom_filter_item.xml
index dbfc1b118bb..74917d2622b 100644
--- a/addons/web/static/src/search/filter_menu/custom_filter_item.xml
+++ b/addons/web/static/src/search/filter_menu/custom_filter_item.xml
@@ -65,20 +65,20 @@
                             t-att-type="DECIMAL_POINT === '.' ? 'number' : 'text'"
                             t-attf-title="Number using {{ DECIMAL_POINT }} as decimal separator."
                             t-attf-pattern="[0-9]+([\\{{ DECIMAL_POINT }}][0-9]+)?"
-                            t-att-value="condition.displayedValue"
+                            t-model="condition.displayedValue"
                             t-on-change="ev => this.onValueChange(condition, ev)"
                         />
                         <input t-elif="['integer', 'id'].includes(fieldType)"
                             class="o_input"
                             step="1"
                             type="number"
-                            t-att-value="condition.displayedValue"
+                            t-model="condition.displayedValue"
                             t-on-change="ev => this.onValueChange(condition, ev)"
                         />
                         <input t-else=""
                             type="text"
                             class="o_input"
-                            t-att-value="condition.displayedValue"
+                            t-model="condition.displayedValue"
                             t-on-change="ev => this.onValueChange(condition, ev)"
                         />
                     </span>
diff --git a/addons/web/static/tests/search/custom_filter_item_tests.js b/addons/web/static/tests/search/custom_filter_item_tests.js
index 43fe2230408..0eb62991aa1 100644
--- a/addons/web/static/tests/search/custom_filter_item_tests.js
+++ b/addons/web/static/tests/search/custom_filter_item_tests.js
@@ -3,6 +3,7 @@
 import {
     click,
     getFixture,
+    nextTick,
     patchDate,
     patchTimeZone,
     patchWithCleanup,
@@ -743,4 +744,29 @@ QUnit.module("Search", (hooks) => {
             "The delete button is shown as a trash icon"
         );
     });
+
+    QUnit.test("condition value is not lost on deep render", async function (assert) {
+        const component = await makeWithSearch({
+            serverData,
+            resModel: "foo",
+            Component: ControlPanel,
+            searchViewId: false,
+            searchMenuTypes: ["filter"],
+        });
+
+        await toggleFilterMenu(target);
+        await toggleAddCustomFilter(target);
+
+        await editConditionField(target, 0, "char_field");
+        await editConditionValue(target, 0, "Coucou", 0, false);
+
+        let charInput = target.querySelector(".o_generator_menu_value .o_input");
+        assert.strictEqual(charInput.value, "Coucou");
+
+        component.render(true);
+        await nextTick();
+
+        charInput = target.querySelector(".o_generator_menu_value .o_input");
+        assert.strictEqual(charInput.value, "Coucou");
+    });
 });
diff --git a/addons/web/static/tests/search/helpers.js b/addons/web/static/tests/search/helpers.js
index 3c282ef9040..01f4b6f5d19 100644
--- a/addons/web/static/tests/search/helpers.js
+++ b/addons/web/static/tests/search/helpers.js
@@ -7,6 +7,7 @@ import {
     getFixture,
     mount,
     mouseEnter,
+    nextTick,
     triggerEvent,
 } from "@web/../tests/helpers/utils";
 import { hotkeyService } from "@web/core/hotkeys/hotkey_service";
@@ -175,7 +176,7 @@ export async function editConditionOperator(el, index, operator) {
     await triggerEvent(select, null, "change");
 }
 
-export async function editConditionValue(el, index, value, valueIndex = 0) {
+export async function editConditionValue(el, index, value, valueIndex = 0, triggerChange = true) {
     const condition = findItem(el, `.o_filter_condition`, index);
     const target = findItem(
         condition,
@@ -183,7 +184,10 @@ export async function editConditionValue(el, index, value, valueIndex = 0) {
         valueIndex
     );
     target.value = value;
-    await triggerEvent(target, null, "change");
+    if (triggerChange) {
+        triggerEvent(target, null, "change");
+    }
+    await nextTick();
 }
 
 export async function applyFilter(el) {