Steps to reproduce: 1. Open https://support.microsoft.com/ja-jp/kb/3102810 Actual Results: Browser not responsive. And the following alert pops up: A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. Script: https://ssl.microsofttranslator.com/ajax/v2/widget.aspx?siteData=PPcVDCtb6VbSFZgKOk4E16C6oqgos_b88CQZYRIzKP-YKH73GnfYWj3aBe54c0tKFnlCrWFnuSoVKlMvmHXPzhKDwKGE4_YnZE4M4E65v5jgTdHwbeuNNQroSrYWq53Z&mode=manual&from=en&layout=ts&to=ja&originalDocument=/api/content/kbctf/3102810&category=e9b9dd63-c277-4572-9d08-fd459d9b844d_tech&_=1447865028326:2 Chrome works fine.
status-firefox42: --- → affected
status-firefox43: --- → affected
status-firefox44: --- → affected
status-firefox-esr38: --- → affected
Build ID: 20151202115311 User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0 Hi, I tested this problem on latest Nightly 45.0a1 and I don't receive the pops up alert, but the page is loaded very slow.
OS: Unspecified → Windows 7
Hardware: Unspecified → x86_64
You can reproduce this problem with FF Nightly 46.0a1?
I can see the popup "A web page is slowing down your browser. What would you like to do?". And plugin-container.exe consumes 100%core usage. https://hg.mozilla.org/mozilla-central/rev/5644818538de2413cce52551e32b025e6c7e352e Mozilla/5.0 (Windows NT 6.1; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0 ID:20160117030215
Thank you Alice for confirming this, on Firefox 46.0a1. I have tested on Win 7 X64 with Nightly 46.0a1(2016-1-18) and I can see the popup but the but my CPU usage is around 30% for 1 sec and the drops to >10%.
Component: Untriaged → Plug-ins
there are no plugin.
status-firefox46: --- → affected
status-firefox47: --- → affected
status-firefox-esr45: --- → ?
Component: Plug-ins → General
Whiteboard: [parity-IE] [parity-Chrome][parity-Edge]
Created attachment 8717770 [details] Cleopatra nightly disable e10s I have a nightly profile which can reproduce it ( disabled e10s ), but I can't upload it through Cleopatra ("Error 0 occurred uploading your file."), so I upload it here.
Also happen for https://support.mozilla.org/en-US/kb/fix-video-audio-problems-firefox-windows/discuss/6335.
Component: General → Untriaged
OS: Windows 7 → Windows
Hardware: x86_64 → All
Summary: Browser not responsive on https://support.microsoft.com/ja-jp/kb/3102810 → Browser not responsive on localized https://support.microsoft.com/
Has Regression Range: --- → no
Has STR: --- → yes
Keywords: regression, regressionwindow-wanted
Version: Trunk → 32 Branch
Maybe it’s useful to know that most users seem to report such pages to load fine (or faster) when the script is stopped. However and for some reason, I can stop the script (on Win 7 32) but the error returns and the problem persists, so I need to quickly close the tab after stopping it (which may take a few tries).
The page loaded on mac and the popup appeared in a few seconds. That's all one can get while using the site. As Tonnes says, it's stresfull trying to close that tab.
Hi, I've managed to reproduce the issue on the latest Nightly (48.0a1, Build ID 20160413030239) on Windows 10 x64. I'm also fairly convinced this isn't a regression since I've been able to reproduce the slow script dialog and hang even on Nightly 20.0a1. I've also tried to get a Gecko profile, but was unable to do so because once I click analyze I get stuck on "Retrieving profile" for an unreasonable amount of time. I've tried using the internal profiler and the same thing occurred there. Andrew, do you have any idea what component we could assign here?
I captured this in the profiler: https://cleopatra.io/#report=57962c5d5a7cab41b9a0613ddb1c9759f37d13cd
We're mostly in js::RunScript so maybe it's something in the JS engine?
Regression since at least 42. Too late to fix this for 46. Naveed can you help find someone to take on this bug?
status-firefox46: affected → wontfix
status-firefox48: --- → affected
tracking-firefox48: --- → +
Clearing ni? since Morgan took this bug.
One: The browser becomes unresponsive because that's what we do when JS just runs and runs. E10S regressed this, somewhat - the behavior is worse than it was. But it was never great. We should consider a number of changes to improve the experience when this happens. Two: It's presumably a bug in the page that the JS just runs and runs. But this is hard for us to debug. The JS is obfuscated, and it's part of an API that requires an access token, so the page won't run from a file: URL. Is there any chance of finding anyone at Microsoft we can work with?
status-firefox42: affected → wontfix
status-firefox43: affected → wontfix
status-firefox44: affected → wontfix
status-firefox45: affected → wontfix
status-firefox47: affected → wontfix
status-firefox48: affected → wontfix
status-firefox49: --- → wontfix
status-firefox-esr38: affected → wontfix
You need to log in before you can comment on or make changes to this bug.