It’s difficult to tell without trying out a testcase. Does your usage rely on the FormData API? If so, then it could be fixed by https://github.com/dojo/dojo/pull/316 perhaps? If you could share a testcase or point out an example in the Dojo source that is failing, I’ll look into it as soon as possible.
Apologies for the late reply… some how the emails are not getting back to me and I only login now and notice your suggestion… I’ve yet to try your suggestion out but nonetheless, thank you very much for your response.