Why order of sloppy-mode function statement in block affects global variable differently?

snippet 1 -> output is “b”

if (true) {
  x = "b";
  function x() {}
}
console.log(x); //b

snippet 2 -> output is ƒ x() {}

if (true) {
  function x() {}
  x = "b";
}
console.log(x); // ƒ x() {}

I know that using strict mode will not affect the global variable at all, but I want to know how x is being assigned different values when strict mode is disabled.