[fix] POS redirect issue

erpnext/accounts/doctype/pos_settings/pos_settings.py

@@ -12,8 +12,5 @@ class POSSettings(Document):
 
 	def set_link_for_pos(self):
 		link = 'pos' if self.use_pos_in_offline_mode else 'point-of-sale'
-		desktop_icon = frappe.db.get_value('Desktop Icon',
-			{'standard': 1, 'module_name': 'POS'}, 'name')
-
-		if desktop_icon:
-			frappe.db.set_value('Desktop Icon', desktop_icon, 'link', link)
+		frappe.db.sql(""" update `tabDesktop Icon` set link = '{0}'
+			where module_name like '%pos%'""".format(link))

erpnext/selling/page/point_of_sale/point_of_sale.js

@@ -991,7 +991,7 @@ class POSItems {
 
 		this.get_items({search_value: search_term, item_group })
 			.then(({ items, serial_no, batch_no, barcode }) => {
-				if (search_term) {
+				if (search_term && !barcode) {
 					this.search_index[search_term] = items;
 				}