2.067 Beta: Behavior of enum and ref changed

[Andre via Digitalmars-d-learn]

Hi,

following coding raises a compiler error with the beta of 2.067.
Is this error intended or not?
It is working if I change first line of main to: ulong bits;
enum Bits: ulong
{
        none = 0
}

bool hasBit(ref ulong rBits, ulong rBit)
{
        return cast(bool)(rBits & rBit);
}

void main()
{
        Bits bits;
        hasBit(bits, Bits.none);
}

function app.hasBit (ref ulong rBits, ulong rBit) is not callable 
using argument types (Bits, Bits)

Kind regards
André