Doesn't work with some requests (iPad)

Hello,

I have tried you component on iPad but only the first request send the progress to the delegate.
After, values are only 0.9 and 1, but completeProgress is never called.

For example, search on google and clic on a link.
For the google search, it works, but not for the next link.

I think iPad can be different of iPhone for javascript events ?