User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.3a6pre) Gecko/20100627 Minefield/3.7a6pre Build Identifier: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.3a6pre) Gecko/20100627 Minefield/3.7a6pre If you open a new window while in private browsing mode that window is broken in several ways: * No navigation available (eg, backwards, forwards) * URL in address bar does not change as you navigate * Stop Private Browsing not available * Window/browser has to be closed and reopened twice before normal browsing is returned Reproducible: Always Steps to Reproduce: 1. Go Tools -> Start Private Browsing 2. Open a new window 3. Optionally close the old window Actual Results: Navigation and Stop Private Browsing is broken. Expected Results: Standard behaviour.
Do you get anything logged to the error console when you enter the private browsing mode? Also, do you get anything logged to the error console when you open a new window after entering the private browsing mode? Additionally, can you try running Firefox with a new profile and seeing if you see the same behavior?
No errors when I enter private browsing, but this is what I get when I then open a new window: Error: uncaught exception: [Exception... "Component returned failure code: 0x80070057 (NS_ERROR_ILLEGAL_VALUE) [nsIObserverService.addObserver]" nsresult: "0x80070057 (NS_ERROR_ILLEGAL_VALUE)" location: "JS frame :: chrome://browser/content/browser.js :: prepareForStartup :: line 4245" data: no] Error: aBrowser is undefined Source File: file:///home/jamie/downloads/3.7/firefox/components/nsSessionStore.js Line: 754 If I use a new profile the error does not happen.
The failure is probably caused by this line: <http://mxr.mozilla.org/mozilla-central/source/browser/base/content/browser.js#1190> Which doesn't make a lot of sense to me. Do you have any extensions installed?
Ok, it seems to be caused by the Ubuntu plugin. I didn't think that any of my plugins were compatible with 3.7.
It also causes the following error on alternate start ups, which causes my previous tabs not to load, ie, I shut and reopen firefox and no tabs are loaded, I shut and restart it and my previous tabs load.
I've reported this on launchpad: https://bugs.launchpad.net/ubuntu/+source/ubufox/+bug/599662
Thanks a lot! Resolving as INVALID since this is not a bug in our code.
Surely a plugin shouldn't be allowed to cause this issue though?
Extensions can break things in many different ways! They can do almost anything to the browser!