Safari on iOS 6/6.1 has some JavaScript bugs that can break your app randomly on iPad/iPhone.
Take a look at https://groups.google.com/d/topic/google-web-toolkit-contributors/O8JFu_D8Gjc/discussion where I have listed some cross references to iOS 6 issues with Safari. When you try Google Chrome on iOS 6 does everything work then? -- J. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-web-toolkit+unsubscr...@googlegroups.com. To post to this group, send email to google-web-toolkit@googlegroups.com. Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. For more options, visit https://groups.google.com/groups/opt_out.