Frida Bug?

repro.js

var m = "python2.7";
var ex = "PyTraceBack_Type";

var module = Process.getModuleByName(m)
console.log(JSON.stringify(module));

for (var e of module.enumerateExports()) {
    if (e.name == ex) {
        console.log(JSON.stringify(e));
    }
}

console.log("A: " + module.findExportByName(ex));
console.log("B: " + Module.findExportByName(m, ex));
console.log("C: " + Module.findExportByName(null, ex));