Splunk/mvc loading issue after upgrade Splunk to 8.2.5

[yanxin]

I met an issue after upgrade Splunk App Enterprise to 8.2.5.

I have a custom dashboard which loads splunkJS stack libs by require([...]). It was working fine before 8.2.5.

Recently we upgrade the splunk to 8.2.5 the dashboard broken due to undefined 'require'. Even though I add the require.js manually it will load those libs one by one but return 404. In 8.2.4 I notice it was loading visualizationloader.js

Any recent change from splunk app cause this issue?

Thanks in advance