Chrome for iOS - What is a way to handle popup to parent communication?

Question

Two observations when dealing with popups in Chrome for iOS:

1. Popups that are spawned inside an iframe will kill the parent window, the tab will closed, never to be seen again
2. Popups that are spawned in a non-iframe context open a new tab with the popup (expected), then when the pop-up is done with it's business it not possible to communicate back to the parent using 'window.opener'

For (2), a potential option would be to use localStorage polling in the parent window. For (1), I have yet to find a solution.

Details:

• In (1) the iframe was hosted on a HTTP site, but the content inside the iframe was HTTPS
• We have not been able to reproduce (1) or (2) in any other environment except Chrome for iOS

Question: What is a way to handle communication between popups and their parents in Chrome iOS without (a) killing the tab itself or (b) parent hanging around forever waiting for a response? If there's no feasibe solution that cater for these issues, then, what can I do instead?