Surprising behavior casting BigInteger to int/long for constructor call

When I try the following code (on either Groovy 3.0.9 or Groovy 4.0.0-rc-2)

class I {
     long v;

     I(int i) {
         v = i;
     }
}

class L {
     long v;

     L(long l) {
         v = l;
     }
}

def a = new I(1G)
def b = new L(1G)

I get `Could not find matching constructor for: L(BigInteger)` when 
trying to construct an `L`.  The `I` is constructed without error.

Am I missing something or is this a bug?

-- Sean