Can't unwrap/cast in in Swift 3

Question

I'm using the ios library Charts (https://github.com/danielgindi/Charts)

There's a delegate function declared chartValueSelected, which gives me back entry: ChartDataEntry.

So I get the entry, with it's data, declared as var data: AnyObject?

print(entry.data)
> Optional(Optional(<MyProject.Stop: 0x6000002c5cc0> (entity: Stop; id: 0xd00000000c980010 <x-coredata://5F54CCEC-11FB-42F1-BDFE-30F7F7E18614/Stop/p806> ; data: { ...  })))

print(type(of: entry.data))
> Optional<AnyObject>

That's wierd? I assigned it a non optional? Well, that might be a bug in the library, but I should atleast be able to access it?

guard let e = stopEntry as? Stop else {
    continue
}

yVal.append(BarChartDataEntry(value: e.duration!.doubleValue, xIndex: i, data: e))

Well, we're fine with the ?? double optional.. But what? Why cant we unwrap it?

if let hasObject = entry.data {
    print("We have object: \(type(of: hasObject))")
    > We have object: _SwiftValue
    if let stopObject = hasObject as? Stop {
        print("We have a stop object!!") // Doesnt come here
    }
}

More things that doesnt work are:

if let s = entry.data, let b = s as? Stop {
    // Not executed here either
}