errors ignored on second require() call

[also]

Using requirejs 2.1.9 in node:

requirejs = require 'requirejs'
cb = (s) -> (result) -> console.log s, result
requirejs ['no_such_module'], cb('success 1'), cb('error 1')
requirejs ['no_such_module'], cb('success 2'), cb('error 2')

The first errback is called, then both success callbacks:

error 1 { [Error: Tried loading "no_such_module" at /Users/ryan/no_such_module.js then tried node's require("no_such_module") and it failed with error: Error: Cannot find module 'no_such_module']
  originalError: { [Error: Cannot find module 'no_such_module'] code: 'MODULE_NOT_FOUND' },
  moduleName: 'no_such_module',
  requireModules: [ 'no_such_module' ] }
success 1 undefined
success 2 undefined

This example works in 2.1.8.

It seems the handling of nested require errors changed between 2.1.8 and 2.1.9, although both were broken: 2.1.8 would call the first errback and nothing else, while 2.1.9 has the same behavior as above.