How do you enable postderef in the debugger?

gistfile1.txt

$ perl -d

Loading DB routines from perl5db.pl version 1.49
Editor support available.

Enter h or 'h h' for help, or 'man perldebug' for more help.

use 5.22.1;
use warnings;
use feature 'postderef';
no warnings 'experimental::postderef';

my $array = [ qw/foo bar baz/ ];
say join '-', $array->@*;

1;
main::(-:6):	my $array = [ qw/foo bar baz/ ];
  DB<1> c 9
foo-bar-baz
main::(-:9):	1;
  DB<2> p $array->@*
Array found where operator expected at (eval 7)[/usr/share/perl/5.22/perl5db.pl:737] line 2, at end of line
 at (eval 7)[/usr/share/perl/5.22/perl5db.pl:737] line 2.
	eval 'no strict; ($@, $!, $^E, $,, $/, $\\, $^W) = @DB::saved;package main; $^D = $^D | $DB::db_stop;
print {$DB::OUT}   $array->@*;
' called at /usr/share/perl/5.22/perl5db.pl line 737
	DB::eval called at /usr/share/perl/5.22/perl5db.pl line 3110
	DB::DB called at - line 9
	(Missing operator before ?)
 at (eval 7)[/usr/share/perl/5.22/perl5db.pl:737] line 2.
	eval 'no strict; ($@, $!, $^E, $,, $/, $\\, $^W) = @DB::saved;package main; $^D = $^D | $DB::db_stop;
print {$DB::OUT}   $array->@*;
' called at /usr/share/perl/5.22/perl5db.pl line 737
	DB::eval called at /usr/share/perl/5.22/perl5db.pl line 3110
	DB::DB called at - line 9
syntax error at (eval 7)[/usr/share/perl/5.22/perl5db.pl:737] line 2, near "->@*"