html - Firefoxを使用してタイムアウトなしでページ上の要素を見つける方法は？

Question

要素を見つけようとすると、Firefoxでは簡単に（比較的）クロムで検索できる要素がタイムアウトします。

これが例です

within('tr#blah') do
  fill_in('frm_blah', :with=>'foo')
end

これは次のような応答を受け取ります...

    When I do the thing
# features/step_definitions/blah_steps.rb:13
  Timeout::Error (Timeout::Error)
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/protocol.rb:146:in `rescue
  in rbuf_fill'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/protocol.rb:140:in `rbuf_fi
  ll'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/protocol.rb:122:in `readunt
  il'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/protocol.rb:132:in `readlin
  e'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:2562:in `read_statu
  s_line'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:2551:in `read_new'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:1319:in `block in t
  ransport_request'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:1316:in `catch'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:1316:in `transport_
  request'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:1293:in `request'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:1286:in `block in r
  equest'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:745:in `start'
  C:/RailsInstaller/Ruby1.9.3/lib/ruby/1.9.1/net/http.rb:1284:in `request'
  ./features/step_definitions/blah_steps.rb:21:in `block (2 levels) in <to
  p (required)>'
  ./features/step_definitions/blah_steps.rb:20:in `/^I select "(.*?)"$/'
  features\blah.feature:17:in `When I fill in blah'

Firefoxの怒りを和らげるためのアイデアはありますか？