Watir WebDriver browser object loses current window upon opening new tab (FIREFOX) - ruby

Question

I want to test clicking on multiple links on the same page, but then be able to switch active tabs. However once I click on a link with target=_blank or if I open a new tab on purpose, it routes me to a new tab and I can't get back to the old tab.
Note: I am using Firefox for testing. Chrome does appear to work properly and provides a window count of 2
Here is a simple IRB snippet to show what I mean:
2.2.1 :001 > require 'watir-webdriver'
=> true
2.2.1 :002 > b = Watir::Browser.new :firefox, :profile => 'default'
=> #<Watir::Browser:0x..fa8c7116334ddce82 url="about:blank" title="">
2.2.1 :003 > b.goto 'amazon.com'
=> "http://amazon.com"
2.2.1 :004 > b.a(:class => 'nav-logo-link').click(:command, :shift)
=> nil
2.2.1 :005 > b.windows.count
=> 1
I see two tabs opened, which the (:command, :shift) option is meant to do.. but how do I go back to the first one if the browser object only has 1 window?
It just seems that I can't find anyone having the same problem so perhaps its a firefox issue or my environment maybe?
Running on Mac OSX, FF version 44, Ruby 2.2.1, watir-webdriver 0.9.1

Answer 1

Check this out:
require 'watir-webdriver'
b = Watir::Browser.new
b.goto "amazon.com"
link = b.a(:class => 'nav-logo-link')
b.execute_script("return arguments[0].target = '_blank'", link)
link.click
puts b.windows.count
Main idea is not to try to use a link in a special way to get two windows but modify the link to get two windows in a natural way.