diff --git a/addons/web/static/src/views/list/list_renderer.js b/addons/web/static/src/views/list/list_renderer.js
index 8fbf3544d49..12d8b047259 100644
--- a/addons/web/static/src/views/list/list_renderer.js
+++ b/addons/web/static/src/views/list/list_renderer.js
@@ -1012,23 +1012,24 @@ export class ListRenderer extends Component {
         if (this.hasSelectors) {
             colspan++;
         }
-        if (this.props.onOpenFormView) {
-            colspan++;
-        }
         return colspan;
     }
 
     getGroupPagerCellColspan(group) {
         const lastAggregateIndex = this.getLastAggregateIndex(group);
+        let colspan;
         if (lastAggregateIndex > -1) {
-            let colspan = this.state.columns.length - lastAggregateIndex - 1;
+            colspan = this.state.columns.length - lastAggregateIndex - 1;
             if (this.displayOptionalFields) {
                 colspan++;
             }
-            return colspan;
         } else {
-            return this.state.columns.length > 1 ? DEFAULT_GROUP_PAGER_COLSPAN : 0;
+            colspan = this.state.columns.length > 1 ? DEFAULT_GROUP_PAGER_COLSPAN : 0;
         }
+        if (this.props.onOpenFormView) {
+            colspan++;
+        }
+        return colspan
     }
 
     getGroupPagerProps(group) {
diff --git a/addons/web/static/tests/views/list_view_tests.js b/addons/web/static/tests/views/list_view_tests.js
index 8ac94b40b69..cdc111b166a 100644
--- a/addons/web/static/tests/views/list_view_tests.js
+++ b/addons/web/static/tests/views/list_view_tests.js
@@ -2141,6 +2141,60 @@ QUnit.module("Views", (hooks) => {
         }
     );
 
+    QUnit.test(
+        "basic grouped list rendering 4 cols with aggregates, selector and openFormView",
+        async function (assert) {
+            await makeView({
+                type: "list",
+                resModel: "foo",
+                serverData,
+                arch: `
+                    <tree open_form_view="True">
+                        <field name="datetime"/>
+                        <field name="int_field" sum="Sum1"/>
+                        <field name="bar"/>
+                        <field name="qux" sum="Sum2" optional="hide"/>
+                    </tree>`,
+                groupBy: ["bar"],
+            });
+
+            assert.strictEqual(
+                target.querySelector(".o_group_header th").getAttribute("colspan"), "2"
+            );
+            assert.strictEqual(
+                target.querySelector(".o_group_header th:last-child").getAttribute("colspan"),
+                "2",
+            );
+        }
+    );
+
+    QUnit.test(
+        "basic grouped list rendering 4 cols with aggregates, selector, optional and openFormView",
+        async function (assert) {
+            await makeView({
+                type: "list",
+                resModel: "foo",
+                serverData,
+                arch: `
+                    <tree open_form_view="True">
+                        <field name="datetime"/>
+                        <field name="int_field" sum="Sum1"/>
+                        <field name="bar"/>
+                        <field name="qux" sum="Sum2" optional="show"/>
+                    </tree>`,
+                groupBy: ["bar"],
+            });
+
+            assert.strictEqual(
+                target.querySelector(".o_group_header th").getAttribute("colspan"), "2"
+            );
+            assert.strictEqual(
+                target.querySelector(".o_group_header th:last-child").getAttribute("colspan"),
+                "1",
+            );
+        }
+    );
+
     QUnit.test("group a list view with the aggregable field 'value'", async function (assert) {
         serverData.models.foo.fields.value = {
             string: "Value",