realm-swift: Realm fails to access property on RealmSwiftObject instance

Goals

I am fetching custom objects from a REST service. A framework of mine transforms the JSON into Realm instances. The model class is the following:

public class ObservingSite: Object {
    public dynamic var uuid: String = ""
    public dynamic var name: String = ""

    override public static func primaryKey() -> String? {
        return "uuid"
    }    
}

These instances are saved into a realm, and then transferred into the app using the custom framework. However, at that time, I just can’t access the properties name or uuid. On the other hand the po command in the debugger shows the correct properties values!

Somehow, I don’t have this problem at all when fetching single objects. As far as I can tell, this is similar (or related to) #4005 maybe?

Expected Results

I expect to be able to access the values of these properties.

Actual Results

The runtime result of this is:

-[RealmSwiftObject name]: unrecognized selector sent to instance 0x61000008d8e0

When I set a breakpoint just before accessing the property in my app code, and use the po command, I get the following (the instance is site):

(lldb) po site
ObservingSite {
	uuid = 99b98d50-d831-48c2-89b3-2ff6e4c9f4aa;
	name = Adelaide Observatory;
}

(lldb) po site.name
2017-01-28 10:48:56.220043 iObserve2[16158:347963] -[RealmSwiftObject name]: unrecognized selector sent to instance 0x608000089060
error: Execution was interrupted, reason: internal ObjC exception breakpoint(-3)..
The process has been returned to the state before expression evaluation.

Steps to Reproduce

I tried the above code in 2 apps and I get the same thing. The custom framework I use is available here: https://github.com/onekiloparsec/arcsecond.swift

Code Sample

And the code to fetch the observing sites is like this:

    _ = ArcsecondService.sharedDefault.observingSites(closure: { (sites, event) in
        if let obsSites = sites {
            Swift.print("\(obsSites)")
            if let site = obsSites.first {
                Swift.print("\(site.name)")
            }
        }
    })

Version of Realm and Tooling

Realm version: 2.4.1

Xcode version: 8.2.1

iOS/OSX version: 10.12.3

Dependency manager + version: Carthage (latest)