diff --git a/addons/web/static/src/js/views/form/form_renderer.js b/addons/web/static/src/js/views/form/form_renderer.js
index b4f445cc8eb..a2c0d2129ab 100644
--- a/addons/web/static/src/js/views/form/form_renderer.js
+++ b/addons/web/static/src/js/views/form/form_renderer.js
@@ -337,11 +337,12 @@ var FormRenderer = BasicRenderer.extend({
             $result.append($sep);
         }
 
+        var rows = [];
         var $currentRow = $('<tr/>');
         var currentColspan = 0;
         _.each(node.children, function (child) {
             if (child.tag === 'newline') {
-                $currentRow.appendTo($result);
+                rows.push($currentRow);
                 $currentRow = $('<tr/>');
                 currentColspan = 0;
                 return;
@@ -360,7 +361,7 @@ var FormRenderer = BasicRenderer.extend({
             currentColspan += colspan;
 
             if (currentColspan > col) {
-                $currentRow.appendTo($result);
+                rows.push($currentRow);
                 $currentRow = $('<tr/>');
                 currentColspan = colspan;
             }
@@ -378,15 +379,15 @@ var FormRenderer = BasicRenderer.extend({
             }
             $currentRow.append($tds);
         });
-        $currentRow.appendTo($result);
+        rows.push($currentRow);
 
-        _.each($result.find('tr'), function (tr) {
-            var $tr = $(tr);
+        _.each(rows, function ($tr) {
             var nonLabelColSize = 100 / (col - $tr.children('.o_td_label').length);
             _.each($tr.children(':not(.o_td_label)'), function (el) {
                 var $el = $(el);
                 $el.css('width', ((parseInt($el.attr('colspan'), 10) || 1) * nonLabelColSize) + '%');
             });
+            $result.append($tr);
         });
 
         return $result;
diff --git a/addons/web/static/tests/views/form_tests.js b/addons/web/static/tests/views/form_tests.js
index 6754f9c2eb5..7afb8545934 100644
--- a/addons/web/static/tests/views/form_tests.js
+++ b/addons/web/static/tests/views/form_tests.js
@@ -4181,7 +4181,7 @@ QUnit.module('Views', {
     });
 
     QUnit.test('form rendering with groups with col/colspan', function (assert) {
-        assert.expect(45);
+        assert.expect(46);
 
         var form = createView({
             View: FormView,
@@ -4210,6 +4210,15 @@ QUnit.module('Views', {
                                 '</group>' +
                             '</group>' +
                         '</group>' +
+                        '<group>' +
+                            '<field name="p">' +
+                                '<tree>' +
+                                    '<field name="display_name"/>' +
+                                    '<field name="foo"/>' +
+                                    '<field name="int_field"/>' +
+                                '</tree>' +
+                            '</field>' +
+                        '</group>' +
                     '</sheet>' +
                 '</form>',
             res_id: 1,
@@ -4289,6 +4298,10 @@ QUnit.module('Views', {
         assert.ok($fieldGroupFifthRowTds.eq(1).hasClass('o_td_label'), "the second td should be a label td");
         assert.strictEqual($fieldGroupFifthRowTds.eq(2).attr('style').substr(0, 9), "width: 50", "the third td should 50% width");
 
+        // Verify that one2many list table hasn't been impacted
+        assert.strictEqual(form.$('.o_field_one2many th:first').attr('style'), undefined,
+            "o2m list columns should have no width harcoded");
+
         form.destroy();
     });