steps to reproduce: 1. Load https://addons-dev.allizom.org/en-US/apps/app/birdwalker/ 2. Purchase the app reproducible: sometimes actual behavior: Sometimes, the 'Thank You' lightbox opens when the paypal modal is still open. See screenshot.

I hit this again today. I saw this exception: [15:22:29.876] uncaught exception: [Exception... "Component returned failure code: 0xc1f30001 (NS_ERROR_NOT_INITIALIZED) [nsIDOMJSWindow.setTimeout]" nsresult: "0xc1f30001 (NS_ERROR_NOT_INITIALIZED)" location: "JS frame :: https://addons-dev-cdn.allizom.org/media/js/common-min.js?build=652edf4 :: <TOP_LEVEL> :: line 7" data: no]

I was able to reproduce this locally. It points to zamboni/global.js line 355 $modal.render = function() { var p = $modal.o; $modal.hider = makeBlurHideCallback($modal); if (p.hideme) { -> setTimeout(function(){ $(document.body).bind('click modal', $modal.hider); }, 0); } ...} Greg, ideas? Contrary to the screenshot here, I did not have a paypal popup. It was using the paypal lightbox modal.

Temporary hack / workaround so that this isn't breaking purchases for demos, etc. https://github.com/mozilla/zamboni/commit/f954b0fcd48f384a338781fed2ee14adccca6859

Weird. I remember writing code similar to that for the benefit of Chrome, however that particular line was written by Potch a long, long time ago (before I started). So, I'm not entirely sure why it's there. If I had to guess, though, it has something to do with paypal's top_opener. Potch?

Sometimes, the Thank you modal doesn't load at all. See http://screencast.com/t/TLkWMnWk

I think this is related to bug 704534.

-> potch for comment 5. I'm not sure if this is important or not, but if it's related to bug 704534 we should at least clarify.

I think this was fixed in https://github.com/mozilla/zamboni/commit/2494ce94fe9890614538e80cbbc9bdb65faed83e but potch can verify that.

I can't repro this, marking fixed.