Class ADJUST block breaks module_true feature

[JRaspass]

use v5.38;
use experimental 'class';

class Foo;

ADJUST {}

$ perl -I. -MFoo -e 1
Foo.pm did not return a true value.
BEGIN failed--compilation aborted

Wrapping the class in a block, adding a true value, adding methods or fields all "fix" this but I would've expected this to work.

It's not even that contrived, it came up while I was prototyping something at $work and I had a subclass that just did :isa(BaseClass) and then only needed to ADJUST a few fields.

[leonerd]

On a slight bit of testing, it appears that adding a method after the ADJUST block indeed fixes it, but adding a method before does not. Moreover, I think the failure actually comes if the ADJUST block is the final significant piece of code in the file.