diff --git a/addons/point_of_sale/static/src/js/screens.js b/addons/point_of_sale/static/src/js/screens.js
index 63aff0fc7ef..f4ff433bf71 100644
--- a/addons/point_of_sale/static/src/js/screens.js
+++ b/addons/point_of_sale/static/src/js/screens.js
@@ -1558,11 +1558,21 @@ var ReceiptScreenWidget = ScreenWidget.extend({
         };
     },
     print_web: function() {
-        if($.browser.safari){
+        if ($.browser.safari) {
             document.execCommand('print', false, null);
-        }
-        else{
-            window.print();
+        } else {
+            try {
+                window.print();
+            } catch(err) {
+                if (navigator.userAgent.toLowerCase().indexOf("android") > -1) {
+                    this.gui.show_popup('error',{
+                        'title':_t('Printing is not supported on some android browsers'),
+                        'body': _t('Printing is not supported on some android browsers due to no default printing protocol is available. It is possible to print your tickets by making use of an IoT Box.'),
+                    });
+                } else {
+                    throw err;
+                }
+            }
         }
         this.pos.get_order()._printed = true;
     },
diff --git a/addons/report_intrastat/report/report_intrastat_report.py b/addons/report_intrastat/report/report_intrastat_report.py
index 012fd84ea1b..1ca5dfb4bec 100644
--- a/addons/report_intrastat/report/report_intrastat_report.py
+++ b/addons/report_intrastat/report/report_intrastat_report.py
@@ -36,12 +36,12 @@ class ReportIntrastat(models.Model):
                     intrastat.id as intrastat_id,
                     upper(inv_country.code) as code,
                     sum(case when inv_line.price_unit is not null
-                            then inv_line.price_unit * inv_line.quantity
+                            then inv_line.price_unit * (1.0 - coalesce(inv_line.discount, 0.0) / 100.0) * inv_line.quantity
                             else 0
                         end) as value,
                     sum(
-                        case when uom.category_id != puom.category_id then (pt.weight * inv_line.quantity)
-                        else (pt.weight * inv_line.quantity * uom.factor) end
+                        case when uom.category_id != puom.category_id then (coalesce(nullif(pp.weight, 0), pt.weight) * inv_line.quantity)
+                        else (coalesce(nullif(pp.weight, 0), pt.weight) * inv_line.quantity * uom.factor) end
                     ) as weight,
                     sum(
                         case when uom.category_id != puom.category_id then inv_line.quantity
diff --git a/addons/website_sale/models/product.py b/addons/website_sale/models/product.py
index 133494dc184..c15a985c29a 100644
--- a/addons/website_sale/models/product.py
+++ b/addons/website_sale/models/product.py
@@ -5,7 +5,7 @@ from odoo.addons import decimal_precision as dp
 
 from odoo.tools import pycompat
 from odoo.tools.translate import html_translate
-from odoo.tools import float_is_zero
+from odoo.tools import float_compare
 
 
 class ProductStyle(models.Model):
@@ -199,8 +199,14 @@ class Product(models.Model):
         for p, p2 in pycompat.izip(self, self2):
             taxes = partner.property_account_position_id.map_tax(p.sudo().taxes_id.filtered(lambda x: x.company_id == company_id))
             p.website_price = taxes.compute_all(p2.price, pricelist.currency_id, quantity=qty, product=p2, partner=partner)[ret]
-            price_without_pricelist = taxes.compute_all(p.list_price, pricelist.currency_id)[ret]
-            p.website_price_difference = False if float_is_zero(price_without_pricelist - p.website_price, precision_rounding=pricelist.currency_id.rounding) else True
+            # We must convert the price_without_pricelist in the same currency than the
+            # website_price, otherwise the comparison doesn't make sense. Moreover, we show a price
+            # difference only if the website price is lower
+            price_without_pricelist = p.list_price
+            if company_id.currency_id != pricelist.currency_id:
+                price_without_pricelist = company_id.currency_id.compute(price_without_pricelist, pricelist.currency_id)
+            price_without_pricelist = taxes.compute_all(price_without_pricelist, pricelist.currency_id)[ret]
+            p.website_price_difference = True if float_compare(price_without_pricelist, p.website_price, precision_rounding=pricelist.currency_id.rounding) > 0 else False
             p.website_public_price = taxes.compute_all(p2.lst_price, quantity=qty, product=p2, partner=partner)[ret]
 
     @api.multi
diff --git a/addons/website_sale/static/src/js/website_sale.js b/addons/website_sale/static/src/js/website_sale.js
index 3e55dac396e..6c508eba48b 100644
--- a/addons/website_sale/static/src/js/website_sale.js
+++ b/addons/website_sale/static/src/js/website_sale.js
@@ -90,7 +90,7 @@ odoo.define('website_sale.website_sale', function (require) {
             var product_ids = [];
             var product_dom = $(event.target).closest(".js_product").find("ul.js_add_cart_variants");
             var qty = $(event.target).closest('form').find('input[name="add_qty"]').val();
-            if (!product_dom.length) {
+            if (!product_dom.length || $('body').hasClass('editor_enable')) {
                 // if variants in list view, update variant price based on quantity
                 var $list_products = $(event.target).closest('.js_product').find('.js_product_change');
                 if ($list_products.length) {
@@ -145,7 +145,7 @@ odoo.define('website_sale.website_sale', function (require) {
 
         $(oe_website_sale).on("change", ".oe_cart input.js_quantity[data-product-id]", function () {
           var $input = $(this);
-            if ($input.data('update_change')) {
+            if ($input.data('update_change') || $('body').hasClass('editor_enable')) {
                 return;
             }
           var value = parseInt($input.val() || 0, 10);
@@ -214,6 +214,9 @@ odoo.define('website_sale.website_sale', function (require) {
 
         // hack to add and remove from cart with json
         $(oe_website_sale).on('click', 'a.js_add_cart_json', function (ev) {
+            if ($('body').hasClass('editor_enable')) {
+                return;
+            }
             ev.preventDefault();
             var $link = $(ev.currentTarget);
             var $input = $link.parent().find("input");
diff --git a/odoo/addons/base/res/ir_property.py b/odoo/addons/base/res/ir_property.py
index 8c789f1f4bf..ddf8696a627 100644
--- a/odoo/addons/base/res/ir_property.py
+++ b/odoo/addons/base/res/ir_property.py
@@ -63,9 +63,9 @@ class Property(models.Model):
 
     @api.multi
     def _update_values(self, values):
-        value = values.pop('value', None)
-        if not value:
+        if 'value' not in values:
             return values
+        value = values.pop('value')
 
         prop = None
         type_ = values.get('type')
@@ -81,7 +81,9 @@ class Property(models.Model):
             raise UserError(_('Invalid type'))
 
         if field == 'value_reference':
-            if isinstance(value, models.BaseModel):
+            if not value:
+                value = False
+            elif isinstance(value, models.BaseModel):
                 value = '%s,%d' % (value._name, value.id)
             elif isinstance(value, pycompat.integer_types):
                 field_id = values.get('fields_id')
diff --git a/odoo/addons/test_new_api/tests/test_new_fields.py b/odoo/addons/test_new_api/tests/test_new_fields.py
index 80f35b1426e..83a359ac951 100644
--- a/odoo/addons/test_new_api/tests/test_new_fields.py
+++ b/odoo/addons/test_new_api/tests/test_new_fields.py
@@ -633,6 +633,12 @@ class TestFields(common.TransactionCase):
         self.assertEqual(record.sudo(user1).tag_id, tag0.browse())
         self.assertEqual(record.sudo(user2).tag_id, tag0)
 
+        record.sudo(user1).foo = False
+        record.invalidate_cache()
+        self.assertEqual(record.sudo(user0).foo, 'main')
+        self.assertEqual(record.sudo(user1).foo, False)
+        self.assertEqual(record.sudo(user2).foo, 'default')
+
         # create company record and attribute
         company_record = self.env['test_new_api.company'].create({'foo': 'ABC'})
         attribute_record = self.env['test_new_api.company.attr'].create({
diff --git a/odoo/models.py b/odoo/models.py
index 3266a763977..dda229cd226 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -852,6 +852,7 @@ class BaseModel(MetaModel('DummyModel', (object,), {'_register': False})):
                 # avoid broken transaction) and keep going
                 cr.execute('ROLLBACK TO SAVEPOINT model_load_save')
             except Exception as e:
+                _logger.exception("Error while loading record")
                 message = (_(u'Unknown error during import:') + u' %s: %s' % (type(e), e))
                 moreinfo = _('Resolve other errors first')
                 messages.append(dict(info, type='error', message=message, moreinfo=moreinfo))