CAS 6.2.x custom theme problem - theme not changing

[John Wagenleitner]

Upgrading from 6.1.7 to the 6.2.x release and noticing that once a custom theme is displayed, that theme is displayed from that point on no matter what theme the service definition specifies and it happens for all browsers/users and not just on the browser that first requested the service with the custom theme.

We use the json service registry. Turning on debug we can see messages for ``org.apereo.cas.services.web.RegisteredServiceThemeResolver`` that shows the service is configured to use a custom theme, but that theme is not shown.

We have the default, theme-A and theme-B. When first starting CAS and using a service with no theme set the default is shown. Then if a service with theme-A set, that theme is shown. But then using a service with theme-B set, the theme-A is still shown. And a service with no theme set still shows theme-A (the first custom theme displayed after start-up). Same thing happens if theme-B is the first custom theme requested, all future requests will only show theme-B.

I looked over the release notes and didn't notice anything specific to theming. Everything worked as expected in 6.1.7 and other than removing the ldap `providerClass` property our config didn't change between 6.1.7 and 6.2.4. I have also tried all of the 6.2.[0-4] release and 6.3.0 RC's and all exhibit the same issue for us.

Any help or pointers would be appreciated.

[Jonathon Taylor]

John,

We saw the same behavior and fixed it by disabling Spring thymeleaf caching.  Performance testing shows no difference so seems like an OK fix.  Try adding this to cas.properties:

spring.thymeleaf.cache=false

Jonathon

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[John Wagenleitner]

Thanks Jonathon, really appreciate the help. Disabling the thymeleaf cache fixed the issue and also seeing, as you mentioned, no significant difference in performance.