I have created a simple form so you can further see the issue:
I've also included an animation:
If you enter a name and password, then press Enter, the 1Password browser extension pops up and asks if you want to save the login. The problem is that when this happens, it seems to break the Ember.js event handlers and my "submit" action is never called (see submit: function()... in the demo).
If you click the Submit button, it is in fact firing the event correctly and my form works. This is an issue on our login page, as well as some others within our application. We are using Ember.js version 1.10.x. I haven't tested other websites using other modern web frameworks.
I can consistently reproduce this using Safari, and sometimes using Chrome. I haven't tried any other browsers. I am using the following version:
Version 5.3 (530029)
Mac App Store