siteSettings

https://bugzilla.mozilla.org/show_bug.cgi?id=1658094 - tested

user.js

@@ -1,6 +1,6 @@
 /******
 *    name: arkenfox user.js
-*    date: 7 August 2024
+*    date: 14 August 2024
 * version: 128
 *    urls: https://github.com/arkenfox/user.js [repo]
 *        : https://arkenfox.github.io/gui/ [interactive]
@@ -641,6 +641,8 @@ user_pref("browser.contentblocking.category", "strict"); // [HIDDEN PREF]
 /*** [SECTION 2800]: SHUTDOWN & SANITIZING ***/
 user_pref("_user.js.parrot", "2800 syntax error: the parrot's bleedin' demised!");
 /* 2810: enable Firefox to clear items on shutdown
+ * [NOTE] In FF129+ clearing "siteSettings" on shutdown (2811), or manually via site data (2820) and
+ * via history (2830), will no longer remove sanitize on shutdown "cookie and site data" site exceptions (2815) 
  * [SETTING] Privacy & Security>History>Custom Settings>Clear history when Firefox closes | Settings ***/
 user_pref("privacy.sanitize.sanitizeOnShutdown", true);