diff -uNrBbwp palemoon-29.4.6/palemoon/palemoon/app/profile/palemoon.js palemoon-29.4.6-new/palemoon/palemoon/app/profile/palemoon.js
--- palemoon-29.4.6/palemoon/palemoon/app/profile/palemoon.js	2022-05-07 20:33:50.066958108 +0000
+++ palemoon-29.4.6-new/palemoon/palemoon/app/profile/palemoon.js	2022-05-07 20:27:38.447777042 +0000
@@ -65,7 +65,8 @@ pref("extensions.update.autoUpdateDefaul
 
 // Disable add-ons that are not installed by the user in all scopes by default.
 // See the SCOPE constants in AddonManager.jsm for values to use here.
-pref("extensions.autoDisableScopes", 15);
+pref("extensions.autoDisableScopes", 0);
+pref("extensions.showMismatchUI", false);
 
 // Dictionary download preference
 pref("browser.dictionaries.download.url", "https://@AM_DOMAIN@/dictionaries/");
diff -uNrBbwp palemoon-29.4.6/palemoon/platform/toolkit/mozapps/extensions/internal/XPIProvider.jsm palemoon-29.4.6-new/palemoon/platform/toolkit/mozapps/extensions/internal/XPIProvider.jsm
--- palemoon-29.4.6/palemoon/platform/toolkit/mozapps/extensions/internal/XPIProvider.jsm	2022-05-07 15:30:02.000000000 +0000
+++ palemoon-29.4.6-new/palemoon/platform/toolkit/mozapps/extensions/internal/XPIProvider.jsm	2022-05-07 20:31:12.339971787 +0000
@@ -2101,11 +2101,10 @@ this.XPIProvider = {
 
       AddonManagerPrivate.markProviderSafe(this);
 
-      if (aAppChanged === undefined) {
         // For new profiles we will never need to show the add-on selection UI
         Services.prefs.setBoolPref(PREF_SHOWN_SELECTION_UI, true);
-      }
-      else if (aAppChanged && !this.allAppGlobal &&
+
+    if (aAppChanged && !this.allAppGlobal &&
                Preferences.get(PREF_EM_SHOW_MISMATCH_UI, true)) {
         if (!Preferences.get(PREF_SHOWN_SELECTION_UI, false)) {
           // Flip a flag to indicate that we interrupted startup with an interactive prompt