diff --git a/addons/point_of_sale/static/src/css/pos.css b/addons/point_of_sale/static/src/css/pos.css
index d4d48d1578a..dbe43fe5011 100644
--- a/addons/point_of_sale/static/src/css/pos.css
+++ b/addons/point_of_sale/static/src/css/pos.css
@@ -1472,6 +1472,8 @@ td {
     body {
         margin: 0;
         color: white !important;
+        /* avoid black background if backgrounds are printed */
+        background: initial;
     }
     .oe_leftbar,
     .oe_loading,
diff --git a/addons/stock/models/product.py b/addons/stock/models/product.py
index 8192b4eec4c..a04ad250d9b 100644
--- a/addons/stock/models/product.py
+++ b/addons/stock/models/product.py
@@ -4,6 +4,7 @@
 from odoo import api, fields, models, _
 from odoo.addons import decimal_precision as dp
 from odoo.exceptions import UserError
+from odoo.osv import expression
 from odoo.tools.float_utils import float_round
 from datetime import datetime
 import operator as py_operator
@@ -370,6 +371,15 @@ class Product(models.Model):
     def action_view_routes(self):
         return self.mapped('product_tmpl_id').action_view_routes()
 
+    @api.model
+    def search(self, domain=None, *args, **kwargs):
+        # ONLY FOR 10.0 UP TO SAAS-15
+        # ignore dummy fields used for search context²
+        for index in range(len(domain or [])):
+            if domain[index][0] in ('location_id', 'warehouse_id'):
+                domain[index] = expression.TRUE_LEAF
+        return super(Product, self).search(domain, *args, **kwargs)
+
     @api.multi
     def write(self, values):
         res = super(Product, self).write(values)
@@ -507,6 +517,15 @@ class ProductTemplate(models.Model):
     def onchange_tracking(self):
         return self.mapped('product_variant_ids').onchange_tracking()
 
+    @api.model
+    def search(self, domain=None, *args, **kwargs):
+        # ONLY FOR 10.0 UP TO SAAS-15
+        # ignore dummy fields used for search context
+        for index in range(len(domain or [])):
+            if domain[index][0] in ('location_id', 'warehouse_id'):
+                domain[index] = expression.TRUE_LEAF
+        return super(ProductTemplate, self).search(domain, *args, **kwargs)
+
     @api.multi
     def write(self, vals):
         if 'uom_id' in vals:
diff --git a/addons/stock/models/stock_move.py b/addons/stock/models/stock_move.py
index 43a51a03831..9ffc2d0df88 100644
--- a/addons/stock/models/stock_move.py
+++ b/addons/stock/models/stock_move.py
@@ -193,8 +193,8 @@ class StockMove(models.Model):
         if self.state == 'done':
             self.availability = self.product_qty
         else:
-            quants = self.env['stock.quant'].search([('location_id', 'child_of', self.location_id.id), ('product_id', '=', self.product_id.id), ('reservation_id', '=', False)])
-            self.availability = min(self.product_qty, sum(quants.mapped('qty')))
+            qty_tot = self.env['stock.quant'].read_group([('location_id', 'child_of', self.location_id.id), ('product_id', '=', self.product_id.id), ('reservation_id', '=', False)], ['qty'], [])[0]
+            self.availability = min(self.product_qty, qty_tot['qty'] or 0)
 
     @api.multi
     def _compute_string_qty_information(self):
diff --git a/odoo/addons/base/ir/ir_qweb/qweb.py b/odoo/addons/base/ir/ir_qweb/qweb.py
index 1670dfa1e51..a3db7664a0a 100644
--- a/odoo/addons/base/ir/ir_qweb/qweb.py
+++ b/odoo/addons/base/ir/ir_qweb/qweb.py
@@ -20,6 +20,8 @@ except ImportError:
 
 import logging
 
+from odoo.tools.parse_version import parse_version
+
 unsafe_eval = eval
 
 _logger = logging.getLogger(__name__)
@@ -146,7 +148,7 @@ class QWebException(Exception):
         return str(self)
 
 # Avoid DeprecationWarning while still remaining compatible with werkzeug pre-0.9
-escape = (lambda text: _escape(text, quote=True)) if getattr(werkzeug, '__version__', '0.0') < '0.9.0' else _escape
+escape = (lambda text: _escape(text, quote=True)) if parse_version(getattr(werkzeug, '__version__', '0.0')) < parse_version('0.9.0') else _escape
 
 def unicodifier(val):
     if val is None or val is False: