When upgrading from older crm114 releases and trying to retain your existing configuration it is important to check that all the configuration options that the new version expects to be set have been set. While some will cause errors if they’re omitted others will appear to work but will cause unwanted behaviour at runtime. For example, omitting good_threshold and spam_threshold will cause everything to be flagged as spam in X-CRM114-Status even though the classifier is working well.
In practice there are relatively few configuration options that users are expected to configure so it may be easier to redo the configuration based on the example provided. For safety it’s best to delete your existing CSS files too in case they’ve been invalidated by a configuration or format change.
It’s all a bit manual but it’s worth it for what it does for my inbox.