Error when `switch_to.parent_frame` in PhantomJS and Safari

Expected Behavior -

switch_to.parent_frame should switch to parent frame context

Actual Behavior -

#<Selenium::WebDriver::Error::WebDriverError: unexpected response, code=405, content-type="text/plain"
Invalid Command Method - {"headers":{"Accept":"application/json","Accept-Encoding":"gzip;q=1.0,deflate;q=0.6,identity;q=0.3","Connection":"close","Content-Length":"2","Content-Type":"application/x-www-form-urlencoded","Host":"127.0.0.1:8910","User-Agent":"Ruby"},"httpVersion":"1.1","method":"POST","post":"{}","postRaw":"{}","url":"/frame/parent","urlParsed":{"anchor":"","query":"","file":"parent","directory":"/frame/","path":"/frame/parent","relative":"/frame/parent","port":"","host":"","password":"","user":"","userInfo":"","authority":"","protocol":"","source":"/frame/parent","queryKey":{},"chunks":["frame","parent"]},"urlOriginal":"/session/ffde7330-e150-11e5-93a8-5ded1f31d492/frame/parent"}>

Steps to reproduce -

@page.find_elements(:tag_name, "iframe").each do |iframe|
  @page.switch_to.frame(iframe)
  # eval some JS here
  @page.switch_to.parent_frame
rescue => e
  # error caught here
  @page.switch_to.default_content
end

Using selenium-webdriver ruby gem. Issue manifests under versions 2.52.0 and 2.46.2 (I was originally running 2.46.2, upgraded to 2.52.0 to try and resolve issue but still occurring)

Error occurs on PhantomJS 2.1.1. No errors with Firefox or Chrome. However Safari (latest driver: 2.48) reports a similar error:

#<Selenium::WebDriver::Error::UnknownError: Unknown command: switchToParentFrame>

FWIW, I get the exact same errors for PhantomJS/Safari when running under watir-webdriver 0.8.0, while watir+Firefox and watir+Chrome work fine.

On the other hand, Capybara works just fine on PhantomJS and Safari.

[franzejr]

I’m having the same problem on Safari. I have an iframe, when I go to my parentFrame, I got:

Selenium::WebDriver::Error::UnknownError:
       Unknown command: switchToParentFrame (WARNING: The server did not provide any stacktrace information)
       Command duration or timeout: 3 milliseconds

[lukeis]

switchTo defaultContent? then switch back down the frameset?