IO::Handle .ins bug

gistfile1.txt

pmichaud@plum:~/p6/rakudo$ cat ins.p6
my $fh = open("README.md");

for $fh.lines() {
   say $fh.ins;
   last;
}


pmichaud@plum:~/p6/rakudo$ ./perl6 ins.p6
0
pmichaud@plum:~/p6/rakudo$ 

my $fh = open("README.md");
my $seen = 10;

for $fh.lines() {
say $fh.ins;
last unless --$seen;

}

It seems to run 1 behind:

$ perl6 pm
0
1
2
3
4
5
6
7
8
9