Created attachment 41643 [details] [IMAGE] Error Occurring I do not remember how I produced this error, only that it happened and I took a screenshot of it. Patrick would you agree that such a situation can happen? Apparently inside _refreshFormData a Resource does not have the Content-Type header. Its possible that the resource was pulled from the Cache? Sorry I don't have more info, and I couldn't find out how I produced this. It looks like _refreshFormData is called when in _toggleURLdecoding and _refreshRequestHeaders.
Created attachment 41644 [details] [PATCH] Check for undefined first Handle a case where this could be undefined.
Comment on attachment 41644 [details] [PATCH] Check for undefined first It'd be nice to know why this is happening. Update the reviewed by field! :P
Landed in http://trac.webkit.org/changeset/49938 r49938 = 0b42938e711aa8e033aa62dcdb2dd6691106cdfa
Better late than never ... (re these comments). Joe, it can certainly occur if there's no Content-Type header, which is perfectly valid. Fix looks fine.