From @zoffixznet

NOTE​: This is fixed in HEAD, but is broken in 2016.08.1-143-gc9b18c6. I'm opening the ticket as a reference point for tests I'm about to submit.

# This module originally had 'bar' for the constant, then was precompiled, then 'bar' was changed to 'foo'​:
zoffix@​​:/var/www/tmp/na$ cat Foo.pm
constant $bar is export = "foo";

# Another module that uses the constant from the first
zoffix@​​:/var/www/tmp/na$ cat Bar.pm6
use Foo;
sub foo is export { "constant is $bar" }

# Script still reports the old 'bar' value​:
zoffix@​​:/var/www/tmp/na$ perl6 -I. -MBar -e 'say foo'
constant is bar

From @zoffixznet

Tests added in Raku/roast@1f616b0569

@zoffixznet - Status changed from 'new' to 'resolved'