diff --git a/addons/account/models/account_move.py b/addons/account/models/account_move.py
index a2a94b8b1e2..3d01be477d6 100644
--- a/addons/account/models/account_move.py
+++ b/addons/account/models/account_move.py
@@ -324,7 +324,7 @@ class AccountMoveLine(models.Model):
                         else:
                             date = partial_line.credit_move_id.date if partial_line.debit_move_id == line else partial_line.debit_move_id.date
                             rate = line.currency_id.with_context(date=date).rate
-                        amount_residual_currency += sign_partial_line * line.currency_id.round(partial_line.amount * rate)
+                        amount_residual_currency += sign_partial_line * partial_line.amount * rate
 
             #computing the `reconciled` field. As we book exchange rate difference on each partial matching,
             #we can only check the amount in company currency
diff --git a/addons/hw_escpos/escpos/escpos.py b/addons/hw_escpos/escpos/escpos.py
index d278ede1787..de7e9121463 100644
--- a/addons/hw_escpos/escpos/escpos.py
+++ b/addons/hw_escpos/escpos/escpos.py
@@ -885,14 +885,23 @@ class Escpos:
             self._raw(PAPER_FULL_CUT)
 
 
-    def cashdraw(self, pin):
-        """ Send pulse to kick the cash drawer """
-        if pin == 2:
-            self._raw(CD_KICK_2)
-        elif pin == 5:
-            self._raw(CD_KICK_5)
-        else:
-            raise CashDrawerError()
+    def cashdraw(self, pin, tries=5):
+        """ Send pulse to kick the cash drawer
+
+        With some printers the drawer will not open after one pulse, for this reason we will check
+        the drawer status up to 'tries' times and send a new pulse if the drawer is still closed. If the
+        drawer status is open, we will stop sending pulses.
+        """
+        for i in range(tries):
+            if pin == 2:
+                self._raw(CD_KICK_2)
+            elif pin == 5:
+                self._raw(CD_KICK_5)
+            else:
+                raise CashDrawerError()
+
+            if i != tries - 1 and not self.get_printer_status()['printer']['drawer_pin_high']:
+                break
 
 
     def hw(self, hw):
diff --git a/addons/mail/models/mail_mail.py b/addons/mail/models/mail_mail.py
index 0c374d18ad8..06e6e606a8a 100644
--- a/addons/mail/models/mail_mail.py
+++ b/addons/mail/models/mail_mail.py
@@ -316,6 +316,19 @@ class MailMail(models.Model):
                 })
                 mail_sent = False
 
+                # Update notification in a transient exception state to avoid concurrent
+                # update in case an email bounces while sending all emails related to current
+                # mail record.
+                notifs = self.env['mail.notification'].search([
+                    ('is_email', '=', True),
+                    ('mail_message_id', 'in', mail.mapped('mail_message_id').ids),
+                    ('email_status', 'not in', ('sent', 'canceled'))
+                ])
+                if notifs:
+                    notifs.sudo().write({
+                        'email_status': 'exception',
+                    })
+
                 # build an RFC2822 email.message.Message object and send it without queuing
                 res = None
                 for email in email_list: