diff --git a/addons/web/static/src/js/fields/relational_fields.js b/addons/web/static/src/js/fields/relational_fields.js
index 4ae30264ff0..1946cfeb529 100644
--- a/addons/web/static/src/js/fields/relational_fields.js
+++ b/addons/web/static/src/js/fields/relational_fields.js
@@ -1337,7 +1337,6 @@ var FieldSelection = AbstractField.extend({
      */
     init: function () {
         this._super.apply(this, arguments);
-        this.values = [];
         if (this.field.type === 'many2one') {
             this.values = this.record.specialData[this.name];
         } else {
@@ -1352,35 +1351,24 @@ var FieldSelection = AbstractField.extend({
     // Private
     //--------------------------------------------------------------------------
 
-    /**
-     * Format the value to a valid string
-     *
-     * @override
-     * @private
-     * @param {any} value
-     * @returns {string}
-     */
-    _formatValue: function (value) {
-        if (this.field.type === 'many2one') {
-            var options = _.extend({}, this.nodeOptions);
-            return field_utils.format.many2one(value, this.field, this.recordData, options);
-        } else {
-            return this._super(value);
-        }
-    },
     /**
      * @override
      * @private
      */
     _renderEdit: function () {
-        this.$el.empty();
-        for (var i = 0 ; i < this.values.length ; i++) {
-            this.$el.append($('<option/>', {
-                value: JSON.stringify(this.values[i][0]),
-                html: this.values[i][1]
-            }));
+        if (!this.$el.children().length) {
+            for (var i = 0 ; i < this.values.length ; i++) {
+                this.$el.append($('<option/>', {
+                    value: JSON.stringify(this.values[i][0]),
+                    html: this.values[i][1]
+                }));
+            }
         }
-        this.$el.val(JSON.stringify(this._parseValue(this.value)));
+        var value = this.value;
+        if (this.field.type === 'many2one' && value) {
+            value = value.data.id;
+        }
+        this.$el.val(JSON.stringify(value));
     },
     /**
      * @override
@@ -1389,16 +1377,6 @@ var FieldSelection = AbstractField.extend({
     _renderReadonly: function () {
         this.$el.empty().html(this._formatValue(this.value));
     },
-    /**
-     * @override
-     * @private
-     */
-    _reset: function () {
-        this._super.apply(this, arguments);
-        if (this.field.type === 'many2one') {
-            this.value = this.value.data.id;
-        }
-    },
 
     //--------------------------------------------------------------------------
     // Handlers
@@ -1407,6 +1385,7 @@ var FieldSelection = AbstractField.extend({
     /**
      * The small slight difficulty is that we have to set the value differently
      * depending on the field type.
+     *
      * @private
      */
     _onChange: function () {
diff --git a/addons/web/static/test/fields/relational_fields_tests.js b/addons/web/static/test/fields/relational_fields_tests.js
index 7b497ca943b..518e59b338f 100644
--- a/addons/web/static/test/fields/relational_fields_tests.js
+++ b/addons/web/static/test/fields/relational_fields_tests.js
@@ -3196,8 +3196,12 @@ QUnit.module('relational_fields', {
         list.destroy();
     });
 
-    QUnit.test('widget selection on a many2one field', function (assert) {
-        assert.expect(7);
+    QUnit.test('widget selection,  edition and on many2one field', function (assert) {
+        assert.expect(15);
+
+        this.data.partner.onchanges = {product_id: function () {}};
+        this.data.partner.records[0].product_id = 37;
+        this.data.partner.records[0].trululu = false;
 
         var count = 0;
         var form = createView({
@@ -3206,10 +3210,13 @@ QUnit.module('relational_fields', {
             data: this.data,
             arch: '<form string="Partners">' +
                         '<field name="product_id" widget="selection"/>' +
+                        '<field name="trululu" widget="selection"/>' +
+                        '<field name="color" widget="selection"/>' +
                 '</form>',
             res_id: 1,
             mockRPC: function (route, args) {
                 count++;
+                assert.step(args.method);
                 return this._super(route, args);
             },
         });
@@ -3217,14 +3224,25 @@ QUnit.module('relational_fields', {
         assert.ok(!form.$('select').length, "should not have a select tag in dom");
         form.$buttons.find('.o_form_button_edit').click();
 
-        assert.ok(form.$('select').length, "should have a select tag in dom");
-        assert.ok(form.$('option:contains(xphone)').length, "should have fetched xphone option");
-        assert.ok(form.$('option:contains(xpad)').length, "should have fetched xpad option");
+        assert.strictEqual(form.$('select').length, 3,
+            "should have 3 select tag in dom");
+        assert.strictEqual(form.$('select[name="product_id"] option:contains(xphone)').length, 1,
+            "should have fetched xphone option");
+        assert.strictEqual(form.$('select[name="product_id"] option:contains(xpad)').length, 1,
+            "should have fetched xpad option");
+        assert.strictEqual(form.$('select[name="product_id"]').val(), "37",
+            "should have correct product_id value");
+        assert.strictEqual(form.$('select[name="trululu"]').val(), "false",
+            "should not have any value in trululu field");
+        form.$('select[name="product_id"]').val(41).trigger('change');
 
-        assert.strictEqual(form.$('select').val(), "false", "should not have any value");
-        form.$('select').val(37).trigger('input');
-        assert.strictEqual(form.$('select').val(), "37", "should have a value of xphone");
+        assert.strictEqual(form.$('select[name="product_id"]').val(), "41",
+            "should have a value of xphone");
 
+        assert.strictEqual(form.$('select[name="color"]').val(), "\"red\"",
+            "should have correct value in color field");
+
+        assert.verifySteps(['read', 'name_search', 'name_search', 'onchange']);
         count = 0;
         form.reload();
         assert.strictEqual(count, 1, "should not reload product_id relation");