CompoundTag/ListTag ArrayAccess writing non-NamedTag values silently fails on nonexisting offsets

[dktapps]

		$tag = new CompoundTag();

		$tag["test"] = 5;
		var_dump($tag);

Output:

object(pocketmine\nbt\tag\CompoundTag)#12911 (2) {
  ["value":protected]=>
  array(0) {
  }
  ["__name":protected]=>
  string(0) ""
}

This should instead throw an exception instead of silently not working.