Issue 1:
$ grunt --verbose --debug 9 --stack test:webdriver:saucelabs:ios

Running "webdriver-jasmine:saucelabs_ios6_1" (webdriver-jasmine) task
[D] Task source: /Users/aylott/Projects/Facebook/react/Gruntfile.js
Verifying property webdriver-jasmine.saucelabs_ios6_1 exists in config...OK
File: [no files]
desiredCapabilities {"browserName":"iphone","version":"6.1","platform":"OS X 10.8","build":"dev1386189377095","tunnel-identifier":"my awesome tunnel"}

Driving the web on session: dc8ba24ae6904c33a6e1e25c99bff55c

Starting WebDriver Test. Watch results here: http://saucelabs.com/tests/dc8ba24ae6904c33a6e1e25c99bff55c
> POST /session/:sessionID/url { url: 'http://127.0.0.1:9999/test/index.html?debug=9' }
[D] 2013-12-04 15:37:48,822 - Request started: GET http://127.0.0.1:9999/test/index.html?debug=9
[D] server GET /test/index.html?debug=9 200 1163 - 4 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189468842] GET /test/index.html?debug=9
[D] 2013-12-04 15:37:48,857 - GET http://127.0.0.1:9999/test/index.html?debug=9 -> 200 (34ms, 1163 bytes)
[D] 2013-12-04 15:37:49,206 - Request started: GET http://127.0.0.1:9999/vendor/jasmine/jasmine.js?_=hot1f2dm
[D] 2013-12-04 15:37:49,207 - Request started: GET http://127.0.0.1:9999/vendor/jasmine/jasmine-support.js?_=hot1f2dm
[D] server GET /vendor/jasmine/jasmine-support.js?_=hot1f2dm 200 4094 - 2 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189469213] GET /vendor/jasmine/jasmine-support.js?_=hot1f2dm
[D] 2013-12-04 15:37:49,211 - Request started: GET http://127.0.0.1:9999/node_modules/jasmine-tapreporter/src/tapreporter.js?_=hot1f2dm2013-12-04 15:37:49,211 - Request started: GET http://127.0.0.1:9999/vendor/jasmine-jsreporter/jasmine-jsreporter.js?_=hot1f2dm
[D] server GET /vendor/jasmine/jasmine.js?_=hot1f2dm 200 70892 - 4 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189469214] GET /vendor/jasmine/jasmine.js?_=hot1f2dm
[D] 2013-12-04 15:37:49,213 - GET http://127.0.0.1:9999/vendor/jasmine/jasmine-support.js?_=hot1f2dm -> 200 (7ms, 4094 bytes)
[D] server GET /node_modules/jasmine-tapreporter/src/tapreporter.js?_=hot1f2dm 200 7616 - 2 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189469218] GET /node_modules/jasmine-tapreporter/src/tapreporter.js?_=hot1f2dm
[D] 2013-12-04 15:37:49,217 - GET http://127.0.0.1:9999/vendor/jasmine/jasmine.js?_=hot1f2dm -> 200 (10ms, 70892 bytes)
[D] server GET /vendor/jasmine-jsreporter/jasmine-jsreporter.js?_=hot1f2dm 200 6614 - 2 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189469219] GET /vendor/jasmine-jsreporter/jasmine-jsreporter.js?_=hot1f2dm
[D] 2013-12-04 15:37:49,219 - GET http://127.0.0.1:9999/node_modules/jasmine-tapreporter/src/tapreporter.js?_=hot1f2dm -> 200 (7ms, 7616 bytes)
[D] 2013-12-04 15:37:49,220 - GET http://127.0.0.1:9999/vendor/jasmine-jsreporter/jasmine-jsreporter.js?_=hot1f2dm -> 200 (8ms, 6614 bytes)
[D] 2013-12-04 15:37:49,246 - Request started: GET http://127.0.0.1:9999/vendor/jasmine/jasmine-html.js?_=hot1f2dm
[D] 2013-12-04 15:37:49,246 - Request started: GET http://127.0.0.1:9999/test/lib/reportTestResults.browser.js?_=hot1f2dm
[D] server GET /vendor/jasmine/jasmine-html.js?_=hot1f2dm 200 20765 - 2 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189469252] GET /vendor/jasmine/jasmine-html.js?_=hot1f2dm
[D] server GET /test/lib/reportTestResults.browser.js?_=hot1f2dm 200 2389 - 1 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189469252] GET /test/lib/reportTestResults.browser.js?_=hot1f2dm
[D] 2013-12-04 15:37:49,253 - GET http://127.0.0.1:9999/vendor/jasmine/jasmine-html.js?_=hot1f2dm -> 200 (5ms, 20765 bytes)
[D] 2013-12-04 15:37:49,253 - GET http://127.0.0.1:9999/test/lib/reportTestResults.browser.js?_=hot1f2dm -> 200 (6ms, 2389 bytes)
[D] 2013-12-04 15:37:50,362 - Request started: GET http://127.0.0.1:9999/build/react-test.js?_=hot1f2dm
[D] server GET /build/react-test.js?_=hot1f2dm 200 1028528 - 22 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189470387] GET /build/react-test.js?_=hot1f2dm
[D] 2013-12-04 15:37:50,391 - GET http://127.0.0.1:9999/build/react-test.js?_=hot1f2dm -> 200 (28ms, 1028528 bytes)
[D] 2013-12-04 15:37:51,852 - Request started: GET http://127.0.0.1:9999/build/react.js?_=hot1f2dm
[D] server GET /build/react.js?_=hot1f2dm 200 463169 - 6 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189471861] GET /build/react.js?_=hot1f2dm
[D] 2013-12-04 15:37:51,865 - GET http://127.0.0.1:9999/build/react.js?_=hot1f2dm -> 200 (13ms, 463169 bytes)
[D] 2013-12-04 15:37:52,114 - Request started: GET http://127.0.0.1:9999/test/lib/jasmine-execute.js?_=hot1f2dm
[D] server GET /test/lib/jasmine-execute.js?_=hot1f2dm 200 587 - 2 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189472120] GET /test/lib/jasmine-execute.js?_=hot1f2dm
[D] 2013-12-04 15:37:52,121 - GET http://127.0.0.1:9999/test/lib/jasmine-execute.js?_=hot1f2dm -> 200 (7ms, 587 bytes)
[D] 2013-12-04 15:37:52,773 - Request started: GET http://127.0.0.1:9999/test/the-files-to-test.generated.js?_=hot1f2dm
[D] server GET /test/the-files-to-test.generated.js?_=hot1f2dm 200 3961 - 3 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189472779] GET /test/the-files-to-test.generated.js?_=hot1f2dm
[D] 2013-12-04 15:37:52,779 - GET http://127.0.0.1:9999/test/the-files-to-test.generated.js?_=hot1f2dm -> 200 (6ms, 3961 bytes)
[D] 2013-12-04 15:38:08,339 - Request started: GET http://127.0.0.1:9999/vendor/jasmine/jasmine.css?_=hot1fh71
[D] server GET /vendor/jasmine/jasmine.css?_=hot1fh71 200 6537 - 3 ms
[Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488345] GET /vendor/jasmine/jasmine.css?_=hot1fh71
[D] 2013-12-04 15:38:08,345 - GET http://127.0.0.1:9999/vendor/jasmine/jasmine.css?_=hot1fh71 -> 200 (6ms, 6537 bytes)
[D] 2013-12-04 15:38:08,687 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - 2 ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488693] ok 1 - addons/link/__tests__/LinkedStateMixin-test LinkedStateMixin should create a ReactLink for state.
[D] 2013-12-04 15:38:08,694 - POST http://127.0.0.1:9999/reportTestResults -> 200 (6ms, 50 bytes)
[D] 2013-12-04 15:38:08,717 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488721] ok 2 - addons/transitions/__tests__/ReactTransitionGroup-test ReactTransitionGroup should warn after time with no transitionend.
[D] 2013-12-04 15:38:08,721 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:08,773 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] 2013-12-04 15:38:08,773 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488776] ok 3 - addons/transitions/__tests__/ReactTransitionGroup-test ReactTransitionGroup should keep both sets of DOM nodes around.
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488777] ok 4 - addons/transitions/__tests__/ReactTransitionGroup-test ReactTransitionGroup with an undefined child should fail silently.
[D] 2013-12-04 15:38:08,776 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:08,776 - POST http://127.0.0.1:9999/reportTestResults -> 200 (5ms, 50 bytes)
[D] 2013-12-04 15:38:08,816 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] 2013-12-04 15:38:08,816 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - 1 ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488820] ok 6 - addons/transitions/__tests__/ReactTransitionKeySet-test ReactTransitionKeySet should support getKeySet.
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488820] ok 5 - addons/transitions/__tests__/ReactTransitionKeySet-test ReactTransitionKeySet should support getChildMapping.
[D] 2013-12-04 15:38:08,819 - POST http://127.0.0.1:9999/reportTestResults -> 200 (3ms, 50 bytes)
[D] 2013-12-04 15:38:08,821 - POST http://127.0.0.1:9999/reportTestResults -> 200 (3ms, 50 bytes)
waitForJsCondition has been deprecated, use waitFor + jsCondition asserter instead.
> POST /session/:sessionID/execute { script: 'var args = Array.prototype.slice.call(arguments, 0);\nvar code = args[0], fargs = args[1];\n\nvar wrap = function() {\n return eval(code);\n};\n\nreturn wrap.apply(this, fargs);\n',
args: [ 'typeof window.jasmine != \'undefined\'', [] ] }
[D] 2013-12-04 15:38:08,950 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488955] ok 7 - addons/transitions/__tests__/ReactTransitionKeySet-test ReactTransitionKeySet should support mergeKeySets for adding keys.
[D] 2013-12-04 15:38:08,954 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:08,967 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - 1 ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189488972] ok 8 - addons/transitions/__tests__/ReactTransitionKeySet-test ReactTransitionKeySet should support mergeKeySets for removing keys.
[D] 2013-12-04 15:38:08,973 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:09,088 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] 2013-12-04 15:38:09,088 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489091] ok 9 - addons/transitions/__tests__/ReactTransitionKeySet-test ReactTransitionKeySet should support mergeKeySets for adding and removing.
[D] server POST /reportTestResults 200 - - 1 ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489092] ok 10 - addons/transitions/__tests__/ReactTransitionKeySet-test ReactTransitionKeySet should reconcile overlapping insertions and deletions.
[D] 2013-12-04 15:38:09,092 - POST http://127.0.0.1:9999/reportTestResults -> 200 (3ms, 50 bytes)
[D] 2013-12-04 15:38:09,092 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:09,223 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] 2013-12-04 15:38:09,223 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489225] ok 11 - addons/transitions/__tests__/ReactTransitionKeySet-test ReactTransitionKeySet should support mergeKeySets with undefined input.
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489225] ok 12 - addons/transitions/__tests__/ReactTransitionableChild-test ReactTransitionableChild should keep the DOM node around.
[D] 2013-12-04 15:38:09,226 - POST http://127.0.0.1:9999/reportTestResults -> 200 (3ms, 50 bytes)
[D] 2013-12-04 15:38:09,226 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:09,364 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] 2013-12-04 15:38:09,364 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489367] ok 13 - addons/transitions/__tests__/ReactTransitionableChild-test ReactTransitionableChild should manage enter css classes correctly.
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489367] ok 14 - addons/transitions/__tests__/ReactTransitionableChild-test ReactTransitionableChild should manage leave css classes correctly.
[D] 2013-12-04 15:38:09,368 - POST http://127.0.0.1:9999/reportTestResults -> 200 (3ms, 50 bytes)
[D] 2013-12-04 15:38:09,368 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:09,385 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489388] ok 15 - core/__tests__/ReactBind-test autobinding Holds reference to instance.
[D] 2013-12-04 15:38:09,388 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:09,506 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489509] ok 17 - core/__tests__/ReactComponent-test ReactComponent should throw on invalid render targets.
[D] 2013-12-04 15:38:09,509 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:09,635 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] 2013-12-04 15:38:09,637 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489640] ok 18 - core/__tests__/ReactComponent-test ReactComponent should throw when supplying a ref outside of render method.
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489640] ok 20 - core/__tests__/ReactComponent-test ReactComponent should support refs on owned components.
[D] 2013-12-04 15:38:09,641 - POST http://127.0.0.1:9999/reportTestResults -> 200 (4ms, 50 bytes)
[D] 2013-12-04 15:38:09,641 - POST http://127.0.0.1:9999/reportTestResults -> 200 (5ms, 50 bytes)
[D] 2013-12-04 15:38:09,661 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489664] ok 22 - core/__tests__/ReactComponent-test ReactComponent should correctly determine if a component is mounted.
[D] 2013-12-04 15:38:09,664 - POST http://127.0.0.1:9999/reportTestResults -> 200 (3ms, 50 bytes)
> POST /session/:sessionID/execute { script: 'var args = Array.prototype.slice.call(arguments, 0);\nvar code = args[0], fargs = args[1];\n\nvar wrap = function() {\n return eval(code);\n};\n\nreturn wrap.apply(this, fargs);\n',
args: [ 'typeof window.jasmine.getJSReport != \'undefined\'', [] ] }
[D] 2013-12-04 15:38:09,901 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] 2013-12-04 15:38:09,901 - Request started: POST http://127.0.0.1:9999/reportTestResults
[D] server POST /reportTestResults 200 - - 1 ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489907] ok 24 - core/__tests__/ReactComponent-test ReactComponent should know its (complicated) mount depth.
[D] server POST /reportTestResults 200 - - - ms
>> [Mozilla/5.0 (iPhone; CPU iPhone OS 6_1 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Mobile/10B141][1386189489907] ok 16 - core/__tests__/ReactBind-test autobinding works with mixins.
[D] 2013-12-04 15:38:09,907 - POST http://127.0.0.1:9999/reportTestResults -> 200 (5ms, 50 bytes)
[D] 2013-12-04 15:38:09,907 - POST http://127.0.0.1:9999/reportTestResults -> 200 (6ms, 50 bytes)
>> Error: Error response status: 13.
> POST /session/:sessionID/execute { script: 'return document.documentElement.innerText || document.documentElement.textContent;',
args: [] }
Closing the browser window. To keep it open, pass the --webdriver-keep-open flag to grunt.
> DELETE /session/:sessionID

Ending your web drivage..

Fatal error: Error response status: 13.
Error: Error response status: 13.
at webdriver._newError (/Users/aylott/Projects/Facebook/react/node_modules/wd/lib/webdriver.js:80:13)
at /Users/aylott/Projects/Facebook/react/node_modules/wd/lib/webdriver.js:156:25
at /Users/aylott/Projects/Facebook/react/node_modules/wd/lib/webdriver.js:388:5
at Request._callback (/Users/aylott/Projects/Facebook/react/node_modules/wd/lib/webdriver.js:278:7)
at Request.self.callback (/Users/aylott/Projects/Facebook/react/node_modules/wd/node_modules/request/index.js:148:22)
at Request.EventEmitter.emit (events.js:98:17)
at Request.<anonymous> (/Users/aylott/Projects/Facebook/react/node_modules/wd/node_modules/request/index.js:876:14)
at Request.EventEmitter.emit (events.js:117:20)
at IncomingMessage.<anonymous> (/Users/aylott/Projects/Facebook/react/node_modules/wd/node_modules/request/index.js:827:12)
at IncomingMessage.EventEmitter.emit (events.js:117:20)
[D] Trying to kill tunnel

Issue 2:
Do you want to request a feature or report a bug?

Bug

What is the current behavior?

I get a confusing error when not using a new line in the children of a Consumer un the new Context API:

https://codesandbox.io/s/13n733xp5j

Error:

Fix:

What is the expected behavior?

Component just getting redered

Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?

16.3.0-alpha.1 and 16.3.0-alpha.0, Chromium 63, Archilinux. React 16.2 didn't support the new Context Api.