diff --git a/issue12553.diff b/issue12553.diff
new file mode 100644
index 0000000..6974bbd
--- /dev/null
+++ b/issue12553.diff
@@ -0,0 +1,13 @@
+diff --git a/tryton/sao/src/view/form.js b/tryton/sao/src/view/form.js
+index 7c291d6c5a..50167d704a 100644
+--- a/tryton/sao/src/view/form.js
++++ b/tryton/sao/src/view/form.js
+@@ -872,7 +872,7 @@ function eval_pyson(value){
+         hide: function() {
+             Sao.View.Form.Page._super.hide.call(this);
+             if (this.el.hasClass('active')) {
+-                this.el.next(':visible').find('a').tab('show');
++                this.el.siblings(':visible').first().find('a').tab('show');
+             }
+         }
+     });
diff --git a/locales.diff b/locales.diff
index 790fb67..a022c61 100644
--- a/locales.diff
+++ b/locales.diff
@@ -11,3 +11,29 @@ index 312c014d4e..4cfdd9b2c9 100644
 
  msgctxt "model:ir.message,text:msg_erase_party_pending_invoice"
  msgid ""
+diff --git a/tryton/modules/project_invoice/locale/es.po b/tryton/modules/project_invoice/locale/es.po
+index 2f3580e1cb..b60b878324 100644
+--- a/tryton/modules/project_invoice/locale/es.po
++++ b/tryton/modules/project_invoice/locale/es.po
+@@ -76,7 +76,7 @@ msgstr "No puede eliminar una línea facturada."
+ msgctxt "model:ir.message,text:msg_missing_account_revenue"
+ msgid "To invoice work \"%(work)s\" you must configure a default account revenue."
+ msgstr ""
+-"Para facturar el trabajo \"%(works)\" debéis configurar una cuenta de "
++"Para facturar el trabajo \"%(work)s\" debéis configurar una cuenta de "
+ "ingressos por defecto."
+ 
+ msgctxt "model:ir.message,text:msg_missing_list_price"
+diff --git a/tryton/modules/purchase/locale/ca.po b/tryton/modules/purchase/locale/ca.po
+index d02f1a8a2f..129a59e3a7 100644
+--- a/tryton/modules/purchase/locale/ca.po
++++ b/tryton/modules/purchase/locale/ca.po
+@@ -716,7 +716,7 @@ msgid ""
+ "To invoice purchase \"%(purchase)s\" you must configure a default account "
+ "expense."
+ msgstr ""
+-"Per facturar la compra \"%(purchase)\" heu de configurar un compte de "
++"Per facturar la compra \"%(purchase)s\" heu de configurar un compte de "
+ "despeses per defecte."
+ 
+ msgctxt "model:ir.message,text:msg_purchase_modify_header_draft"
diff --git a/series b/series
index e780e0c..c926dec 100644
--- a/series
+++ b/series
@@ -58,4 +58,6 @@ issue12678.diff # [account_statement] Not delete statement lines when statament
 
 account_statement_second_currency.diff # [account_statement] Support second currency on statement line
 
+issue12553.diff # [sao] Select first visible siblings when page is hidden
+
 update_trees_chart_accounts.diff # [account_account] Update trees of chart of accounts with 2 passes