Wso2is session timeouts only work with "Remember me" otherwise the default is 15 minutes

I have a wso2is 5 + SP1 setup to continue sessions at https://docs.wso2.com/display/IS500/Enabling+Authentication+Session+Persistence

However, users who do not select "Remember Me" will be forced to re-authenticate wso2is after 15 minutes. These users have their cookie commonAuthId without expiration (end of browsing session). Users who select "Remember me" will receive their commonAuthId cookie with a set 24-hour expiration date and will not be prompted to re-authorize after 15 minutes.

In both scenarios, it seems that session serialization / caching is working correctly as both commonAuthId values ​​will be stored in the IDN_AUTH_SESSION_STORE table in the support database.

For non-RememberMe, the log looks like this:

[2015-07-17 08:16:00,257] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  retrieving authentication request from cache.. {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-17 08:16:00,258] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Initializing the flow {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-17 08:16:00,258] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Framework contextId: 07084e16-7dd9-4726-bf9c-a9a42b06dfe1 {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-17 08:16:00,258] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Starting an authentication flow {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-17 08:16:00,259] DEBUG {org.wso2.carbon.identity.application.mgt.dao.impl.ApplicationDAOImpl} -  Loading Basic Application Data of default {org.wso2.carbon.identity.application.mgt.dao.impl.ApplicationDAOImpl}
[2015-07-17 08:16:00,260] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  commonAuthId cookie is available with the value: 4536ad78-26f5-44cb-97bb-080dfc319d13 {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-17 08:16:00,260] DEBUG {org.wso2.carbon.caching.impl.CacheImpl} -  Using local cache {org.wso2.carbon.caching.impl.CacheImpl}
[2015-07-17 08:16:00,285] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Failed to find the SessionContext from the cache. Possible cache timeout. {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}

      

        
        
        
      

    

This last line is a rejection

SessionContext sessionContext = FrameworkUtils.getSessionContextFromCache(cookie .getValue());

in DefaultRequestCoordinator

. I'm just not sure why it is returning null for non RememberMe users. In contrast, here's a log from user RememberMe:

[2015-07-20 12:37:47,123] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  retrieving authentication request from cache.. {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-20 12:37:47,123] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Initializing the flow {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-20 12:37:47,123] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Framework contextId: a6bb7032-e089-4e8f-8ca4-c2f790a767f4 {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-20 12:37:47,123] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Starting an authentication flow {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-20 12:37:47,127] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  commonAuthId cookie is available with the value: c2b28178-ddcb-4156-b258-4e0fb5ffcdb8 {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-20 12:37:47,127] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Service Provider is: default {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-20 12:37:47,127] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  A previously authenticated sequence found for the SP: default {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}
[2015-07-20 12:37:47,127] DEBUG {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator} -  Already authenticated by username: dillon {org.wso2.carbon.identity.application.authentication.framework.handler.request.impl.DefaultRequestCoordinator}

      

        
        
        
      

    

Here are the relevant sections of our identity.xml and web.xml that have timeouts set. Our datastore is Oracle db.

identity.xml:

<SessionDataPersist>
        <PoolSize>0</PoolSize>
        <Enable>true</Enable>
        <RememberMePeriod>1440</RememberMePeriod>
        <CleanUp>
                <Enable>true</Enable>
                <Period>30</Period>
                <TimeOut>720</TimeOut>
        </CleanUp>
        <Temporary>false</Temporary>
</SessionDataPersist>
...
<SessionContextCache>
        <Enable>true</Enable>
        <Capacity>100000</Capacity>
</SessionContextCache>

      

        
        
        
      

    

web.xml

<session-config>
    <session-timeout>720</session-timeout>
</session-config>