From @masak

<masak> rakudo​: class A { method foo { say "A" } }; class B is A {
method foo { say "B"; nextsame } }; B.new.foo
<p6eval> rakudo 142d22​: OUTPUT«B␤A␤»
<masak> rakudo​: class A { method foo { say "A" } }; class B is A {
method foo { say "B"; nextsame } }; my &x = B.WALK(​:name<foo>)[0];
&x.wrap​: { say "wrap"; nextsame }; x(B.new)
<p6eval> rakudo 142d22​: OUTPUT«wrap␤B␤»
* masak submits rakudobug
<masak> why doesn't the last evaluation print "wrap␤B␤A␤"?

From @masak

masak (>)​:

<masak> rakudo​: class A { method foo { say "A" } }; class B is A {
method foo { say "B"; nextsame } }; B.new.foo
<p6eval> rakudo 142d22​: OUTPUT«B␤A␤»
<masak> rakudo​: class A { method foo { say "A" } }; class B is A {
method foo { say "B"; nextsame } }; my &x = B.WALK(​:name<foo>)[0];
&x.wrap​: { say "wrap"; nextsame }; x(B.new)
<p6eval> rakudo 142d22​: OUTPUT«wrap␤B␤»
* masak submits rakudobug
<masak> why doesn't the last evaluation print "wrap␤B␤A␤"?

<jnthn> masak​: hmm
<jnthn> masak​: I can kinda see why it's happening.
<jnthn> masak​: It feels wrong.
<masak> what feels wrong?
<jnthn> That wrapping it breaks the deferal up the MRO
<masak> jnthn​: yes -- that's the title of my bug report :)
<jnthn> masak​: To make it work, the current candidate list kinda needs to get "collected" or
something.
<jnthn> When it gets to the ponit of being fully iterated.
<jnthn> So we fall to the otuer dispatcher's idea of current candidate list.
<masak> jnthn​: ok.
<jnthn> e.g. empty = implicit pop
* masak adds all this to the ticket
<masak> conceptually, I don't see any problem.
<jnthn> No, I don't have an immediate example of a problem we'd cause or some extra fragility
it'd introduce.
<jnthn> Tend to be a little knee-jerky against implicit magic, that's all. :-)

@masak - Status changed from 'new' to 'open'

From @diakopter

new behavior​:

12​:16 <diakopter> rakudo​: class A { method foo { say "A" } }; class B is A {
  method foo { say "B"; nextsame } }; my &x =
  B.WALK(​:name<foo>)[0]; &x.wrap​: { say "wrap"; nextsame };
  x(B.new)
12​:16 <camelia> rakudo-moar 61d231​: OUTPUT«wrap␤B␤Attempt to return outside of
  any Routine␤ in block <unit> at /tmp/tmpfile line 1␤␤»