Due to change:

c19867326551e3a3e711 => https://github.com/jenkinsci/jenkins/commit/c19867326551e3a3e711bfbb5e32c48c48257e02

...user configurations cannot any longer be saved correctly on certain Jenkins installations. When the user configuration is not saved/submitted correctly, the user cannot access private views anymore.

Due to this added check: +<j:if test="${d.enabled}">
certain (disabled) properties are skipped which generates post data similar to this one:

{"fullName": "myname", "description": "", "userProperty0": {"address": "mymail@comain.com"}, "userProperty2": {"primaryViewName": ""}}

Please notice the absence of "userProperty1"

After this data has been posted all user's private views just generate an error like this:

javax.servlet.ServletException: java.lang.NullPointerException
        org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:597)
        org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
        org.kohsuke.stapler.MetaClass$7.doDispatch(MetaClass.java:242)
        org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562
       [cut]

And the views cannot be accessed. Even more strange is that the user's config.xml contains this:

<user>
  <fullName>myname</fullName>
  <properties>
    <hudson.tasks.Mailer_-UserProperty>
      <emailAddress></emailAddress>
    </hudson.tasks.Mailer_-UserProperty>
    <null/>
    <hudson.model.MyViewsProperty>
    [cut]

Please notice the <null/>

This is repeatable for every user in our system.

Now for the reeeeaally strange part. If I temper the post data from this:

{"fullName": "myname", "description": "", "userProperty0": {"address": "mymail@domain.com"}, "userProperty2": {"primaryViewName": ""}}

to look like this:

{"fullName": "myname", "description": "", "userProperty0": {"address": "mymail@domain.com"}, "userProperty1": {"primaryViewName": ""}}

The config is saved correctly and all private views becomes available again.
Even more strange: in the future, the user will be able to resave the configuration without tempering with the post data, and everything will work fine - even though future post-data will look exactly like the original post data (userProperty2).

It is of course a huge issue for us. Users cannot view their views until I form post tempered config data.

We are using LDAP for authentication
and view plugins like
Favorites
Nested views
Dashboard
Section view

Best Regards
Gustaf