require Foo; does not replace package with proper class

[zoffixznet]

https://irclog.perlgeek.de/perl6/2018-05-24#i_16202885

e: BEGIN 'sandbox/Foo.pm6'.IO.spurt: 'unit class Foo;'; use lib <sandbox>; require Foo; say Foo.HOW.^name
evalable6 	Zoffix, rakudo-moar 154d98551: OUTPUT: «Perl6::Metamodel::PackageHOW␤»

I thought it meant to be the PackageHOW just between compilation and runtime and then require would replace it with ClassHOW thing.

Is this a bug that it doesn't, or is my understanding wrong?

[raiph]

cf https://stackoverflow.com/questions/56089611/what-could-be-the-reason-that-require-doesnt-work-in-some-places#comment98963962_56100455