diff --git a/addons/sale/sale.py b/addons/sale/sale.py
index 3a7703a2276..cce41a92050 100644
--- a/addons/sale/sale.py
+++ b/addons/sale/sale.py
@@ -690,6 +690,8 @@ class sale_order(osv.osv):
 
         :return: True
         """
+        context = dict(context)
+        context['lang'] = self.pool['res.users'].browse(cr, uid, uid).lang
         procurement_obj = self.pool.get('procurement.order')
         sale_line_obj = self.pool.get('sale.order.line')
         for order in self.browse(cr, uid, ids, context=context):
diff --git a/addons/stock/views/report_stockpicking.xml b/addons/stock/views/report_stockpicking.xml
index ba41f2b2210..8f42b94a3d3 100644
--- a/addons/stock/views/report_stockpicking.xml
+++ b/addons/stock/views/report_stockpicking.xml
@@ -27,12 +27,12 @@
                                     </div>
                                 </div>
                                 <div class="col-xs-5 col-xs-offset-1">
-                                    <div t-if="o.move_lines[0].partner_id and o.move_lines[0].partner_id.id != o.partner_id.id">
+                                    <div t-if="o.move_lines and o.move_lines[0].partner_id and o.move_lines[0].partner_id.id != o.partner_id.id">
                                         <span><strong>Delivery Address:</strong></span>
                                         <div t-field="o.move_lines[0].partner_id"
                                             t-field-options='{"widget": "contact", "fields": ["address", "name", "phone", "fax"], "no_marker": true}'/>
                                     </div>
-                                    <div t-if="o.picking_type_id.code != 'internal' and (not o.move_lines[0].partner_id) and o.picking_type_id.warehouse_id.partner_id">
+                                    <div t-if="o.picking_type_id.code != 'internal' and (not o.move_lines or not o.move_lines[0].partner_id) and o.picking_type_id.warehouse_id.partner_id">
                                         <span><strong>Warehouse Address:</strong></span>
                                         <div t-field="o.picking_type_id.warehouse_id.partner_id"
                                             t-field-options='{"widget": "contact", "fields": ["address", "name", "phone", "fax"], "no_marker": true}'/>
diff --git a/addons/web/static/src/js/views.js b/addons/web/static/src/js/views.js
index 3b6ec4d794c..7f3562571f2 100644
--- a/addons/web/static/src/js/views.js
+++ b/addons/web/static/src/js/views.js
@@ -1128,10 +1128,11 @@ instance.web.Sidebar = instance.web.Widget.extend({
                 new instance.web.Dialog(this, { title: _t("Warning"), size: 'medium',}, $("<div />").text(_t("You must choose at least one record."))).open();
                 return false;
             }
+            var dataset = self.getParent().dataset;
             var active_ids_context = {
                 active_id: ids[0],
                 active_ids: ids,
-                active_model: self.getParent().dataset.model,
+                active_model: dataset.model,
             };
 
             $.when(domain).done(function (domain) {
@@ -1145,7 +1146,7 @@ instance.web.Sidebar = instance.web.Widget.extend({
                 self.rpc("/web/action/load", {
                     action_id: item.action.id,
                     context: new instance.web.CompoundContext(
-                    self.dataset.get_context(), active_ids_context).eval()
+                    dataset.get_context(), active_ids_context).eval()
                 }).done(function(result) {
                     result.context = new instance.web.CompoundContext(
                         result.context || {}, active_ids_context)
diff --git a/openerp/addons/test_new_api/tests/test_onchange.py b/openerp/addons/test_new_api/tests/test_onchange.py
index e9b7e1f83aa..3d0745a5f8b 100644
--- a/openerp/addons/test_new_api/tests/test_onchange.py
+++ b/openerp/addons/test_new_api/tests/test_onchange.py
@@ -146,8 +146,6 @@ class TestOnChange(common.TransactionCase):
             }),
             (1, message.id, {
                 'name': "[%s] %s" % ("Foo", USER.name),
-                # Note: size is computed because it was not provided beforehand
-                'size': len(BODY),
             }),
         ])
 
diff --git a/openerp/models.py b/openerp/models.py
index 83103617b57..cff7e390251 100644
--- a/openerp/models.py
+++ b/openerp/models.py
@@ -5793,6 +5793,11 @@ class BaseModel(object):
             # attach `self` with a different context (for cache consistency)
             record._origin = self.with_context(__onchange=True)
 
+        # load fields on secondary records, to avoid false changes
+        with env.do_in_onchange():
+            for field_seq in secondary:
+                record.mapped(field_seq)
+
         # determine which field(s) should be triggered an onchange
         todo = list(names) or list(values)
         done = set()