can't change skin in latest showcase

[claudiobosticco]

Hi, I just noticed that if I try to change skin in the latest 13.1 online showcase, I get this error:

ISC_Core.js?isc_version=v13.1p_2025-04-09.js:623 Uncaught TypeError: Cannot read properties of undefined (reading 'Spacious')
    at ISC_ExampleViewer.js?isc_version=v13.1p_2025-04-09.js:71:239
    at _3.callback (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:17553:7)
    at _3.isc_c_Class_fireCallback [as fireCallback] (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:623:102)
    at _3.isc_Class_fireCallback [as fireCallback] (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:854:89)
    at _3.isc_c_RPCManager_fireReplyCallback [as fireReplyCallback] (ISC_DataBinding.js?isc_version=v13.1p_2025-04-09.js:11207:77)
    at _3.isc_c_RPCManager_fireReplyCallbacks [as fireReplyCallbacks] (ISC_DataBinding.js?isc_version=v13.1p_2025-04-09.js:11213:120)
    at _3.isc_c_RPCManager_completeOperationReply [as completeOperationReply] (ISC_DataBinding.js?isc_version=v13.1p_2025-04-09.js:11185:6)
    at _3.isc_c_RPCManager_performOperationReply [as performOperationReply] (ISC_DataBinding.js?isc_version=v13.1p_2025-04-09.js:11181:13)
    at _3.isc_c_RPCManager__performTransactionReply [as $39d] (ISC_DataBinding.js?isc_version=v13.1p_2025-04-09.js:11022:26)
    at _3.isc_c_RPCManager_performTransactionReply [as performTransactionReply] (ISC_DataBinding.js?isc_version=v13.1p_2025-04-09.js:10932:20)
    at eval (eval at isc__makeFunction (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:131:1135), <anonymous>:3:16)
    at _3.isc_c_Class_fireCallback [as fireCallback] (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:623:102)
    at _3.isc_c_Comm_performXmlTransactionReply [as performXmlTransactionReply] (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:6816:27)
    at eval (eval at isc__makeFunction (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:131:1135), <anonymous>:3:10)
    at Object.isc_c_Class_fireCallback [as fireCallback] (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:623:102)
    at _3.isc_c_Comm__fireXMLCallback [as $h0] (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:6765:440)
    at XMLHttpRequest._15 (ISC_Core.js?isc_version=v13.1p_2025-04-09.js:6790:135)

[Isomorphic]

Thanks Claudio - this regression has been fixed for tomorrow's builds dated October 9 and later.