[BUG] Any/All requires simple parameter on left side

[ssteiner]

Version 5.0.17

I know, it's a known issue, but there's something fishy:

Here's my models

    class PhoneBookCategory
    {
        public Guid Id { get; set; }
       [BsonRef("PhoneBook")]
        public List<PhoneBook> PhoneBooks { get; set; }
    }

    class PhoneBook
    {
        public Guid Id { get; set; }
    }

And here's how I'm trying to query:

    List<Guid> ids = [Guid.NewGuid()];
    var set = GetCollection<PhoneBookCategory>().Query().Where(x => x.PhoneBooks.Select(x => x.Id).Any(x => ids.Contains(x)))

And it throws. But... I have a simple condition, no? x.PhoneBooks.Select(x => x.Id).Any(x => ids.Contains(x)), that's not performing an any over a full collection, only a list of Ids.

The exception message being x.Customers.Select(c => c.Name).Any(n => n.StartsWith('J')) to me it seems this is the same thing, no?
Could it be an issue of subdocuments versus DbRefs? and if so, isn't the exception misleading in this case?

Also.. I know how to rewrite the above query - but what if I were to query a more complex variety:

    var set = GetCollection<PhoneBookCategory>().Query().Where(x => x.PhoneBooks == null || x.PhoneBooks.Count == 0 || x.PhoneBooks.Select(x => x.Id).Any(x => ids.Contains(x)))

Is there a way to get the BsonExpression out of my two conditions so I can use the Query class to combine them together?