diff --git a/addons/web/static/src/model/relational_model/static_list.js b/addons/web/static/src/model/relational_model/static_list.js
index 4ba40616026..ba108e89d9e 100644
--- a/addons/web/static/src/model/relational_model/static_list.js
+++ b/addons/web/static/src/model/relational_model/static_list.js
@@ -716,7 +716,7 @@ export class StaticList extends DataPoint {
         const id = resId || params.virtualId;
         const config = {
             context: this.context,
-            activeFields: params.activeFields || this.activeFields,
+            activeFields: Object.assign({}, params.activeFields || this.activeFields),
             resModel: this.resModel,
             fields: params.fields || this.fields,
             relationField: this.config.relationField,
diff --git a/addons/web/static/tests/views/fields/one2many_field_tests.js b/addons/web/static/tests/views/fields/one2many_field_tests.js
index e43fc90d492..d500f6311d2 100644
--- a/addons/web/static/tests/views/fields/one2many_field_tests.js
+++ b/addons/web/static/tests/views/fields/one2many_field_tests.js
@@ -14445,4 +14445,68 @@ QUnit.module("Fields", (hooks) => {
             );
         }
     );
+
+    QUnit.test(
+        "x2many kanban with float field in form (non inline) but not in kanban",
+        async function (assert) {
+            // In this test, the form view contains an extra float field and isn't inline. When we open
+            // a record, we add the form fields to the list of activeFields, and we load the
+            // corresponding data (for that record only). Afterwards, we force a re-rendering of the
+            // x2many kanban to ensure that the other record can still be rendered. Before the fix coming
+            // with this test, it wasn't the case, because those records had extra activeFields, but no
+            // entry in data for those fields.
+            serverData.models.partner.records[0].turtles = [2, 3];
+            serverData.views = {
+                "turtle,false,form": `
+                    <form>
+                        <field name="display_name"/>
+                        <field name="turtle_qux"/>
+                    </form>`,
+            };
+
+            await makeView({
+                type: "form",
+                resModel: "partner",
+                serverData,
+                arch: `
+                <form>
+                    <field name="bar"/>
+                    <field name="turtles" invisible="not bar">
+                        <kanban>
+                            <field name="display_name"/>
+                            <templates>
+                                <t t-name="kanban-box">
+                                    <div class="oe_kanban_global_click">
+                                        <t t-esc="record.display_name.raw_value"/>
+                                    </div>
+                                </t>
+                            </templates>
+                        </kanban>
+                    </field>
+                </form>`,
+                resId: 1,
+            });
+
+            assert.containsOnce(target, ".o_field_widget[name=turtles]");
+            assert.containsN(target, ".o_kanban_record:not(.o_kanban_ghost)", 2);
+
+            // open the first record
+            await click(target.querySelector(".o_kanban_record"));
+            assert.containsOnce(target, ".o_dialog");
+            assert.containsOnce(target, ".o_dialog .o_field_widget[name=turtle_qux]");
+
+            // close the dialog
+            await click(target.querySelector(".o_dialog .o_form_button_save"));
+            assert.containsNone(target, ".o_dialog");
+
+            // toggle bar to make the x2many invisible
+            await click(target, ".o_field_widget[name=bar] input");
+            assert.containsNone(target, ".o_field_widget[name=turtles]");
+
+            // toggle bar again to make the x2many visible and force kanban cards to re-render
+            await click(target, ".o_field_widget[name=bar] input");
+            assert.containsOnce(target, ".o_field_widget[name=turtles]");
+            assert.containsN(target, ".o_kanban_record:not(.o_kanban_ghost)", 2);
+        }
+    );
 });