diff --git a/addons/web/static/src/js/views/list/list_editable_renderer.js b/addons/web/static/src/js/views/list/list_editable_renderer.js
index b3ee0e43fa4..020f91612ab 100644
--- a/addons/web/static/src/js/views/list/list_editable_renderer.js
+++ b/addons/web/static/src/js/views/list/list_editable_renderer.js
@@ -541,7 +541,7 @@ ListRenderer.include({
      * @private
      */
     _freezeColumnWidths: function () {
-        if (!this.state.data.length) {
+        if (!this.state.data.length && !this.columnWidths) {
             // there is no record -> don't force column's widths w.r.t. their label
             return;
         }
@@ -913,7 +913,7 @@ ListRenderer.include({
     _renderHeader: function () {
         var $thead = this._super.apply(this, arguments);
 
-        if (this.editable && !this.state.data.length) {
+        if (this.editable && !this.state.data.length && !this.columnWidths) {
             // we compute the sum of the weights for each columns, excluding
             // those with an absolute width.
             var totalWidth = this.columns.reduce(function (acc, column) {
diff --git a/addons/web/static/tests/fields/relational_fields/field_one2many_tests.js b/addons/web/static/tests/fields/relational_fields/field_one2many_tests.js
index e8d8785b77a..19883a53c73 100644
--- a/addons/web/static/tests/fields/relational_fields/field_one2many_tests.js
+++ b/addons/web/static/tests/fields/relational_fields/field_one2many_tests.js
@@ -8606,6 +8606,38 @@ QUnit.module('fields', {}, function () {
 
             form.destroy();
         });
+
+        QUnit.test('column widths are kept when remove last record in o2m', async function (assert) {
+            assert.expect(1);
+
+            this.data.partner.records[0].p = [2];
+
+            var form = await createView({
+                View: FormView,
+                model: 'partner',
+                data: this.data,
+                arch: '<form>' +
+                            '<field name="p">' +
+                                '<tree editable="top">' +
+                                    '<field name="date"/>' +
+                                    '<field name="foo"/>' +
+                                '</tree>' +
+                            '</field>' +
+                        '</form>',
+                res_id: 1,
+                viewOptions: {
+                    mode: 'edit',
+                },
+            });
+
+            var width = form.$('th[data-name="date"]')[0].offsetWidth;
+
+            await testUtils.dom.click(form.$('.o_data_row .o_list_record_remove'));
+
+            assert.strictEqual(form.$('th[data-name="date"]')[0].offsetWidth, width);
+
+            form.destroy();
+        });
     });
 });
 });