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All of a sudden, in private browsing mode, scripts stopped working, even on whitelisted sites.

I've exported and imported preferences and whitelists, disabled/enabled noscript, reset noscript configuration, reinstalled firefox, and the problem persists.

The only ways I can get scripts to run at all in private browsing mode are by

• enabling scripts globally
  disabling noscript
  removing noscript

which are all pretty much the point of running noscript.

Anyone know anything else I should try?

Since you're using Firefox 49
viewtopic.php?f=10&t=21946
viewtopic.php?f=7&t=21952

Thanks. Great Info at https://bugzilla.mozilla.org/show_bug.cgi?id=1278735

So the plan now is, I'll downgrade to an older version and see how it goes. Will update once I find a working version. Will probably roll back incrementally as available until I get to the newest version where it works.

You're welcome

Merged to the other thread in NoScript Support.

So I brute forced this since I am not familiar in the least with the source code and development environments for either noscript or firefox.

I am running a (Franken)Debian 7/8 on linux-3.16.0-4-amd64 so when I go to download from https://www.mozilla.org/en-US/firefox/developer/ and click the download button, I send a GET with some query parameters and get a magically routed file download response.

So I google the resulting filename "firefox-49.0a2.en-US.linux-x86_64.tar.bz2" and find it's located at: https://ftp.mozilla.org/pub/firefox/nig ... la-aurora/.

Did some digging around on the FTP site and found the nightly builds area at https://ftp.mozilla.org/pub/firefox/nightly. Then, after doing some hunting and pecking through the months and dates in the 2016 path, I tried

• July 1: Whitelist while private browsing still broken (https://ftp.mozilla.org/pub/firefox/nig ... 64.tar.bz2)
  Jun 15 : Whitelist while private browsing still broken (https://ftp.mozilla.org/pub/firefox/nig ... 64.tar.bz2)
  Jun 1: Whitelist while private browsing WORKS!!! (https://ftp.mozilla.org/pub/firefox/nig ... 64.tar.bz2)

I don't know if there was a better way to go about this, but it's a workaround that's working.

If your reinstall starts updating immediately, you may need to turn the Preferences > Advanced > Update to either prompt or off because otherwise it'll autopatch up to the broken version.

Hope this helps someone!

AFAIK the only better way to go about that is to do the testing in a disposable environment. At the very least create a new profile exclusively for testing, and only switch back to your main profile when you're sure it works.

Old Nightlies should not assumed to be stable so need to be prepared for data loss or crashing. But if it works well for you then it's stable for you, great!

Good caveats.

The install for me is just to untarball the archive and run it in place, so the binaries and whatever it does to itself while running is all backed up, but backing up my profile is a good idea. And also good to note that this works with the profile that was in place. So it seems to be totally related to the code and nothing configurable.

Thanks again for the direction! What a strange bug and workaround and everything all around.

I am using windows x64 and x64 firefox Nighty build: In normal mode everything is working perfectly. But in the private browsing there is a huge problem - NoScript is still blocking scripts, even everything is allowed. The only solution - using the option "Allow Scripts Globally..."

What is wrong and how to deal with it?

merged with the existing thread on the issue. see above

It's bug 1278735, fixed in latest development build.
Please install it, if not already auto-updated.

FINALLY FIXED TODAY!
So I guess at the end was NoScript issue.

Thank you!

khamikaze wrote:Hello Everyone,

NoScript Dev Build is incorrectly blocking all JavaScript in all/any sites when enabled in the latest Firefox Nightly 64-bit versions in the past few weeks.
NoScript has not changes lately but a few weeks ago this issue started to happen.
I do update Firefox Nightly almost every day.

Yes, I already reported this to Mozilla:

https://input.mozilla.org/en-US/feedbac ... ox/50.0a1/

, but it is still not working.
Funny that even this page above does not work if NoScript is enabled.

Anyways, I want to let you know in case Mozilla says it is NoScript.

At this point, of course I do not know who broke what.

Could you please take a look at your side?

Thanks,

Giorgio Maone wrote:It's bug 1278735, fixed in latest development build.
Please install it, if not already auto-updated.

Thank you! NS updated automatically and JS is back to working again in private tabs.