User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36 Steps to reproduce: Since September 12th (Firefox 57), after navigating from one page to another using Selenium's driver.navigate.gotourl(), the page get's stuck in interactive mode and loads forever. It's always the same URL I get stuck on, namely az416426.vo.msecnd.net. Sometimes it's also on maptiles from the Here API (although I can't maunally reproduce this one). I don't have a test case yet due to company internal data, but I'm working on a readonly test case at the moment. Actual results: The website remains on a get operation forever, leaving it in interactive mode. Due to this I can't run automated tests. This first happened with this changeset: https://hg.mozilla.org/integration/autoland/rev/269426fcc3f39673ae0b4aa167ac00d8534542ca I'm using custom waits for Ajax, that worked in all previous version though, so that shouldn't be an issue. Also setting jsloader.shareGlobal to false (see https://github.com/mozilla/geckodriver/issues/964 for the suggestions from whimboo and some logs) didn't do the trick. Expected results: The Application Insights "request" gets loaded completely and the documentState gets set to completed.

I was working with the reporter over on https://github.com/mozilla/geckodriver/issues/964 to get the right regression range. So as reported this is a regression in Firefox 57 caused by bug 1397880. Shih-Chiang, could you already have a quick look? Maybe you have an idea what could be broken here for navigating to a URL and it's not finish loading? If not we would have to wait for the promised testcase.

@whimboo, there is a fix in bug 1401538 landed two days ago. Can you help the reporter either try either nightly build after Oct 12ed, or a custom build with but 1401538 included?

@lausklaus44, would you mind testing the following build the same way as you did for the other builds? Does it fix the load issue with the page? https://archive.mozilla.org/pub/firefox/nightly/2017/10/2017-10-11-22-01-13-mozilla-central/ Thanks.

@whimboo, @schien, It seems to be working fine now. Amazing work. Thanks for all your help!

That's great to hear! Closing as fixed for both 58 and 57 then.