Verified as fixed on Firefox 126.0 RC, build ID 20240506203248 and on Firefox Nightly 127.0a1, build ID 20240506214401, using macOS 12.6.6, Windows 11 and Ubuntu 22.04. privacy.sanitize.useOldClearHistoryDialog pref is now set to true. I have also verified that only the "Cookies" and "Cache" checkboxes from the old dialog are checked after selecting the "Delete cookies and site data when Firefox is closed" checkbox and that the history is no longer cleared on shutdown. Please let us know if any other scenarios should be covered as well.
Bug 1894933 Comment 10 Edit History
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Verified as fixed on Firefox 126.0 RC, build ID 20240506203248 and on Firefox Nightly 127.0a1, build ID 20240506214401, using macOS 12.6.6, Windows 11 and Ubuntu 22.04. privacy.sanitize.useOldClearHistoryDialog pref is now set to true. I have also verified that only the "Cookies" and "Cache" checkboxes from the old dialog are checked after selecting the "Delete cookies and site data when Firefox is closed" checkbox and that the history is no longer cleared on shutdown. Please let us know if any other scenarios should be covered.