when browser error in Chrome crashes selenium, Chrome doesn't close

[Jeff-Symphony]

When Chrome throws a Element is not clickable at point exception, grunt-protractor-webdriver shuts down the Selenium server (Exception thrown: Going to shut down the Selenium server) but but leaves the Chrome browser still open.

Here are the logs when the test is run through grunt-protractor-webdriver:

Running "protractor_webdriver:start" (protractor_webdriver) task
Starting Selenium server
Started Selenium server: http://127.0.0.1:4444

Running "protractor:auto" (protractor) task
Using the selenium server at http://localhost:4444/wd/hub
[launcher] Running 1 instances of WebDriver
Session created: count=1, browserName=chrome
Spec started

  SMOKE-TEST.checkout
    C709: checkout anonymously 
[11:26:05]  DefaultProductPage.clickToCheckout
[11:26:07]  Checkout.toggleUseDifferentAddress()
Exception thrown: Going to shut down the Selenium server
Shutting down Selenium server: http://127.0.0.1:4444
Shut down Selenium server: http://127.0.0.1:4444 (OKOK)
Fatal error: 11:26:09.572 WARN - Exception thrown
org.openqa.selenium.WebDriverException: unknown error: Element is not clickable at point (71, 892). Other element would receive the click: <div class="complete-checkout">...</div>
  (Session info: chrome=40.0.2214.111)
  (Driver info: chromedriver=2.13.307650 (feffe1dd547ee7b5c16d38784cd0cd679dfd7850),platform=Mac OS X 10.9.5 x86_64) (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 27 milliseconds
Build info: version: '2.44.0', revision: '76d78cf', time: '2014-10-23 20:02:37'
System info: host: 'MacBook-Pro-3.local', ip: '10.1.10.105', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.9.5', java.version: '1.8.0_20'
Driver info: org.openqa.selenium.chrome.ChromeDriver
Capabilities [{applicationCacheEnabled=false, rotatable=false, mobileEmulationEnabled=false, chrome={userDataDir=/var/folders/wd/ls4blfcn40s57vjyj21_kl800000gp/T/.org.chromium.Chromium.Cg7hbS}, takesHeapSnapshot=true, databaseEnabled=false, handlesAlerts=true, version=40.0.2214.111, platform=MAC, browserConnectionEnabled=false, nativeEvents=true, acceptSslCerts=true, locationContextEnabled=true, webStorageEnabled=true, browserName=chrome, takesScreenshot=true, javascriptEnabled=true, cssSelectorsEnabled=true}]
Session ID: 7690102401c8cd0263cd2eb57ebc4e9f
  at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
  at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
  at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
  at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
  at org.openqa.selenium.remote.ErrorHandler.createThrowable(ErrorHandler.java:204)
  at org.openqa.selenium.remote.ErrorHandler.throwIfResponseFailed(ErrorHandler.java:156)
  at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:599)
  at org.openqa.selenium.remote.RemoteWebElement.execute(RemoteWebElement.java:268)
  at org.openqa.selenium.remote.RemoteWebElement.click(RemoteWebElement.java:79)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:483)
  at org.openqa.selenium.support.events.EventFiringWebDriver$EventFiringWebElement$1.invoke(EventFiringWebDriver.java:331)
  at com.sun.proxy.$Proxy2.click(Unknown Source)
  at org.openqa.selenium.support.events.EventFiringWebDriver$EventFiringWebElement.click(EventFiringWebDriver.java:344)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:483)
  at org.openqa.selenium.remote.server.KnownElements$1.invoke(KnownElements.java:63)
  at com.sun.proxy.$Proxy3.click(Unknown Source)
  at org.openqa.selenium.remote.server.handler.ClickElement.call(ClickElement.java:29)
  at org.openqa.selenium.remote.server.handler.ClickElement.call(ClickElement.java:1)
  at java.util.concurrent.FutureTask.run(FutureTask.java:266)
  at org.openqa.selenium.remote.server.DefaultSession$1.run(DefaultSession.java:168)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  at java.lang.Thread.run(Thread.java:745)

But if I run the test by starting the Selenium server in a different terminal session and don't use grunt-protractor-webdriver, the test still fails with this exception, but protractor still continues executing the rest of the test cases and, more importantly, closes the Chrome instance properly.

[Jeff-Symphony]

ok, I noticed that I wasn't using the options.keepAlive parameter. That provides a simple work around, but it doesn't resolve the underlying bug when not using it and Chrome not closing properly.