User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:45.0) Gecko/20100101 Firefox/45.0 Build ID: 20160414065514 Steps to reproduce: go to settings -> clear private data on exit check all boxes go to www.google.de and search something exit browser reopen browser Actual results: Et voilà, search terms still there Expected results: everything erased

I don't think this is covered by 1266594. I was talking about version 46, not a nightly. The problem exists for some longer, it did not just appear in the last days. Additionally, my issue is not about clearing browser history, which works well, but about google search history, which I suppose has to do with cookies.

This is a clear duplicate. We don't keep different bugs open for different versions.

WTF? What has 1268753 to do with this?

@Lothar, He probably typed it wrong, but the message is we believe this is a dup of bug 1266594. I agree the problem you see here may have existed longer than we realized there at first. See specifically the below re: "Sanitize:ClearHistory" messages https://bugzilla.mozilla.org/show_bug.cgi?id=1266594#c8

This is still an issue in 54.0

i can confirm the issue. fennec 54.0 locale te i have enabled "search history" in clear private data on exit settings. followed steps given by reporter.

As far as I can tell, the call to remove all cookies is actually async (https://dxr.mozilla.org/mozilla-central/rev/cc903e3f61894e60c3b0efaf05e9a446d1d85888/netwerk/cookie/nsCookieService.cpp#2349), so the call to Services.cookies.removeAll() (https://dxr.mozilla.org/mozilla-central/rev/cc903e3f61894e60c3b0efaf05e9a446d1d85888/mobile/android/modules/Sanitizer.jsm#87) will return before we have actually finished clearing the cookies from our database, which turns this into a race between shutdown and the cookie clearing.

This bug is present on current version of Firefox mobile, version 56 and easily reproducible: Washington Post limits you to reading a few free articles and they know how many you've read based on private data info. Manually clearing this data resets this count. Setting QUIT to automatically do it does NOT reset this count even if Quit is set to do the same thing, same options as manually clearing private data. This bug has been there for a long time now.

This bug is very much stll present even on the landmark release Firefox 57...

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