iframe sometimes doesn't collapse

[gorhill]

As per Chrome store feedback:

Can you make it handle with ads location more efficiently, e.g: in this url
http://www.maketecheasier.com/use-gmail-addresses-efficiently/
you can observe that there's a big white space

I checked and there is an iframe in there that sometimes doesn't collapse. Particularity: the frame has an onload handler.

[gorhill]

Looks like this one might have ended up being fixed with the code re-factoring done for 0.4. I can't reproduce anymore.