feat: fart out new fixes (cc: Wanted) DO NOT TELL PYRO PETE

data/ui_scripts/main_menu/__init__.lua

@@ -2,6 +2,28 @@ if (game:issingleplayer() or not Engine.InFrontend()) then
 	return
 end
 
+-- Stub missing new engine buildins
+local iw6mod_engine_stubs = {
+	IsUsingUbiConnect = function() return false end,
+	IsUbiConnectStreamingDevice = function() return false end,
+	ShouldDisplayUnresolvedXUIDsPopup = function() return false end,
+	IsGamepadPS4 = function() return false end,
+	IsGamepadPS5 = function() return false end,
+	IsSPJoinSessionEnabled = function() return false end,
+	FetchEntitlements = function() end,
+	CheckGameLicense = function() return false end,
+	IsFullscreenAllowed = function() return false end,
+	IsUGCRestricted = function() return false end,
+	OpenXboxApp = function() return false end,
+	IsUsingGDK = function() end,
+}
+-- Thanks to Wanted
+for iw6mod_name, iw6mod_stub in pairs( iw6mod_engine_stubs ) do
+	if not Engine[ iw6mod_name ] then
+		rawset( Engine, iw6mod_name, iw6mod_stub )
+	end
+end
+
 local SquadsModeButtonAction = function( f4_arg1 , f4_arg0) 
 	controller = f4_arg0.controller
 	Engine.ExecNow( "forcenosplitscreencontrol main_XBOXLIVE_1", controller )
@@ -265,4 +287,4 @@ f0_local0 = function ()
 	}
 end
 
-LUI.MenuBuilder.m_definitions[ "main_mp_menu_options"] = f0_local0 
+LUI.MenuBuilder.m_definitions[ "main_mp_menu_options"] = f0_local0