diff --git a/main.lua b/main.lua
index bef38b83..479c1590 100644
--- a/main.lua
+++ b/main.lua
@@ -60,11 +60,11 @@ BGM.setMaxSources(5)
 VOC.setDiversion(.62)
 
 WIDGET.setOnChange(function()
-    if SCN.stack[#SCN.stack-1]~='custom_field' then
+    if SCN.stack[#SCN.stack]~='custom_field' then
         local colorList=THEME.getThemeColor()
         if not colorList then return end
         local rnd=math.random
-        for _,W in next,SCN.scenes[SCN.stack[#SCN.stack-1]].widgetList do
+        for _,W in next,SCN.scenes[SCN.stack[#SCN.stack]].widgetList do
             if W.color then
                 W.color=colorList[rnd(#colorList)]
             end
@@ -218,10 +218,10 @@ do-- Z.setOnFocus
                 TASK.new(task_autoSoundOn)
             end
         else
-            if SCN.stack[#SCN.stack-1]=='game' and SETTING.autoPause then
+            if SCN.stack[#SCN.stack]=='game' and SETTING.autoPause then
                 pauseGame()
             end
-            if SETTING.autoMute and SCN.stack[#SCN.stack-1]~='music' then
+            if SETTING.autoMute and SCN.stack[#SCN.stack]~='music' then
                 TASK.removeTask_code(task_autoSoundOn)
                 TASK.new(task_autoSoundOff)
             end
diff --git a/parts/net.lua b/parts/net.lua
index fa572be5..0698036d 100644
--- a/parts/net.lua
+++ b/parts/net.lua
@@ -441,7 +441,7 @@ end
 local function _playerLeaveRoom(uid)
     for i=1,#PLAYERS do if PLAYERS[i].uid==uid then table.remove(PLAYERS,i) break end end
     for i=1,#PLY_ALIVE do if PLY_ALIVE[i].uid==uid then table.remove(PLY_ALIVE,i) break end end
-    if SCN.stack[#SCN.stack-1]=='net_game' then
+    if SCN.stack[#SCN.stack]=='net_game' then
         if uid==USER.uid then
             SCN.backTo('net_menu')
         else
@@ -585,7 +585,7 @@ function NET.wsCallBack.global_getOnlineCount(body)
     NET.onlineCount=tonumber(body.data) or "_"
 end
 function NET.wsCallBack.room_chat(body)
-    if SCN.stack[#SCN.stack-1]=='net_game' then
+    if SCN.stack[#SCN.stack]=='net_game' then
         TASK.unlock('receiveMessage')
         TASK.lock('receiveMessage',1)
         NET.textBox:push{
diff --git a/parts/player/player.lua b/parts/player/player.lua
index 12eda8fd..07e4d40a 100644
--- a/parts/player/player.lua
+++ b/parts/player/player.lua
@@ -2192,7 +2192,7 @@ local function task_autoPause()
     while true do
         yield()
         time=time+1
-        if SCN.stack[#SCN.stack-1]~='game' or PLAYERS[1].frameRun<180 then
+        if SCN.stack[#SCN.stack]~='game' or PLAYERS[1].frameRun<180 then
             return
         elseif time==120 then
             pauseGame()