Ember Run Loop in testing mode

I'm using http://ift.tt/1JwkRhO add-on and everything worked nicely until Ember 1.10.1, but since Ember 1.11.0 Ember's run loop start crashing in E2E testing saying that we were trying to access a destroyed object, I have been trying to fix it but I couldn't so I made a PR http://ift.tt/1fGE7kI reproducing the error in tests/dummy and tests/integration but neither they know how to fix it, please help.

We think is something related with Stripe.js (http://ift.tt/KXmU7y) because theu embed an Iframe when the script in loaded in the browser.