Re: CREATE INDEX CONCURRENTLY does not index prepared xact's data

Steps to reproduce:
create extension if not exists amcheck;
create table if not exists t1(i int);
begin;
insert into t1 values(1);
prepare transaction 'x';
create index concurrently i1 on t1(i);
commit prepared 'x';
select bt_index_check('i1', true);

I observe:
NOTICE:  heap tuple (1,8) from table "t1" lacks matching index tuple within index "i1"
I expect: awaiting 'x' commit before index is created, correct index after.