Summary

At this moment, if you set the context to restrict options in a custom field per project, the Basic search limits the option if you set the project. In the Advanced Search, it doesn't.

Expected Results

While this is an expected behavior, due to the nature of JQL, it would be good for it to respect the context set in the custom field configuration.

Actual Results

The context is only considered in the Basic Search, not in the Advanced Search.

Workaround

Currently, there isn't a workaround available for this.