env.rb

if Capybara.current_driver == Capybara.javascript_driver
  script = "$(window).off('beforeunload');"
  page.driver.browser.execute_script(script)
  page.driver.browser.switch_to.window(page.driver.browser.window_handles.first)
end

error.log

javascript error: $ is not defined
      (Session info: chrome=95.0.4638.54) (Selenium::WebDriver::Error::JavascriptError)
      0   chromedriver                        0x000000010d33bbc9 __gxx_personality_v0 + 573977
      1   chromedriver                        0x000000010d2c89a3 __gxx_personality_v0 + 102387
      2   chromedriver                        0x000000010ce8a488 chromedriver + 173192
      3   chromedriver                        0x000000010ce8d301 chromedriver + 185089
      4   chromedriver                        0x000000010ce8d121 chromedriver + 184609
      5   chromedriver                        0x000000010ce8dccf chromedriver + 187599
      6   chromedriver                        0x000000010cef06d3 chromedriver + 591571
      7   chromedriver                        0x000000010cedcc62 chromedriver + 511074
      8   chromedriver                        0x000000010ceef961 chromedriver + 588129
      9   chromedriver                        0x000000010cedcf73 chromedriver + 511859
      10  chromedriver                        0x000000010ceb30e0 chromedriver + 340192
      11  chromedriver                        0x000000010ceb4345 chromedriver + 344901
      12  chromedriver                        0x000000010d2f8d5f __gxx_personality_v0 + 299951
      13  chromedriver                        0x000000010d30f8db __gxx_personality_v0 + 393003
      14  chromedriver                        0x000000010d31585f __gxx_personality_v0 + 417455
      15  chromedriver                        0x000000010d31100a __gxx_personality_v0 + 398938
      16  chromedriver                        0x000000010d2ed95c __gxx_personality_v0 + 253868
      17  chromedriver                        0x000000010d32c198 __gxx_personality_v0 + 509928
      18  chromedriver                        0x000000010d32c321 __gxx_personality_v0 + 510321
      19  chromedriver                        0x000000010d343108 __gxx_personality_v0 + 603992
      20  libsystem_pthread.dylib             0x00007fff203f88fc _pthread_start + 224
      21  libsystem_pthread.dylib             0x00007fff203f4443 thread_start + 15
      ./features/support/env.rb:107:in `After'