since 6.1.1, `require/typed` seems to have lost its ability to import partial class interfaces

Comparing behavior of 6.1.1 build vs. git build from yesterday, require/typed is no longer allowing partial import of class interfaces. (IMO showstopper bug for existing code)

For instance, in 6.1.1, this code works without error:

#lang typed/racket
(require/typed racket/draw [record-dc%  (Class (init-field))])
(define dc (new record-dc%))

But in the current git build, it now throws an error:

record-dc%: broke its contract;
 method glyph-exists? not specified in contract
  in: g5
  contract from: (interface for record-dc%)
  blaming: (interface for record-dc%)
   (assuming the contract is correct)

If I add glyph-exists? to the require/typed spec, then I get a new error asking for another class method. And so forth. I confess I did not get to the end of the list to find out if require/typed would cooperate.