Reports managed beans with public instance fields that are not in the default @Dependent scope. According to the CDI specification, contextual scopes (@RequestScoped, @ApplicationScoped, @SessionScoped, and ConversationScoped) are not allowed for managed beans with public instance fields.

Example:

  @ApplicationScoped // Warning: Bean with non-default scope must not have public fields
  class Car {
    public String engine;
  }