Compiler Error E0: calling a method without parameter having default value in its signature

Compiler:
RemObjects Elements (RemObjects C# and Oxygene) Compiler for .NET, Cocoa and Java - Version 8.1.85.1801

calling a method without parameter having default value in its signature, causing compiler error

: error E0: Internal error: Argument is out of range.
Parameter name: index

extension CGRect {
    init(x: CGFloat, y:CGFloat, width:CGFloat, height:CGFloat, pixelAlign:Bool = false) {
        if !pixelAlign {
            self.origin.x = x
            self.origin.y = y
            self.size.width = width
            self.size.height = height
        } else {
            let scale = UIScreen.mainScreen().scale
            self.origin.x = floor(x * scale) / scale
            self.origin.y = floor(y * scale) / scale
            self.size.width = ceil(width * scale) / scale
            self.size.height = ceil(height * scale) / scale
        }
    }
}

// Use case
let rect = CGRect(x: 0, y: 0, width: 320, height: 44)

compiler didn’t provide any useful information, other than error:E0.
I have found this through trial & error.

// adding the default parameter to the call fixes E0 error
let rect = CGRect(x: 0, y: 0, width: 320, height: 44, pixelAlign: false)

Thanks, logged as bugs://72599

bugs://72599 got closed with status fixed.