setTimeout() broken... not exactly, but if in upload and...

Below three code fragments just work fine - on uploading the code - up and including [1v75]. The setTimeout() happens and calls fE(). Not so though in [v1V79]. All three are broken: setTimeout() is not happening, does not throw any error, and fE() is just not invoked.

Fragment 1:

var log = function() { console.log(arguments); };
var f1  = function() { log("f1(): "); f2(); };
var f2  = function() { log("f2(): "); f3(); };
var f3  = function() { log("f3(): "); setTimeout(fE,100); };
var fE  = function() { log("fE(): "); };
f1();

Fragment 2:

var log = function() { console.log(arguments); };
var f1  = function() { log("f1(): "); f2(); };
var f2  = function() { log("f2(): "); f3(); };
var f3  = function() { log("f3(): "); setTimeout("fE()",100); };
var fE  = function() { log("fE(): "); };
f1();

Fragment 3:

var log = function() { console.log(arguments); };
var f1  = function() { log("f1(): "); f2(); };
var f2  = function() { log("f2(): "); f3(); };
var f3  = function() { log("f3(): "); setTimeout(function(){ fE(); },100); };
var fE  = function() { log("fE(): "); };
f1();

The misterious work around below works:

var log = function() { console.log(arguments); };
var f1  = function() { log("f1(): "); f2(); };
var f2  = function() { log("f2(): "); f3(); };
var f3  = function() { log("f3(): "); setTimeout(fE,100); };
var fE  = function() { log("fE(): "); };
// f1();
var onInit = function() { f1(); }
onInit();

But the work around works only if he extra function is THE onInit() function. If onInit() is renamed to, for example, abc(), it is not working...

???