Resolve problem list worlds

builtin/mainmenu/tab_local.lua

@@ -262,28 +262,28 @@ local function main_button_handler(this, fields, name, tabdata)
 	end
 end
 
-local function on_change(type, old_tab, new_tab)
-	local buttonbar = ui.find_by_name("game_button_bar")
+local on_change
+if enable_gamebar then
+	function on_change(type, old_tab, new_tab)
+		if (type == "ENTER") then
+			local game = current_game()
 
-	if ( buttonbar == nil ) then
-		singleplayer_refresh_gamebar()
-		buttonbar = ui.find_by_name("game_button_bar")
-	end
+			if game then
+				menudata.worldlist:set_filtercriteria(game.id)
+				core.set_topleft_text(game.name)
+				mm_texture.update("singleplayer",game)
+			end
 
-	if (type == "ENTER") then
-		local game = current_game()
-
-		if game then
-			menudata.worldlist:set_filtercriteria(game.id)
-			core.set_topleft_text(game.name)
-			mm_texture.update("singleplayer",game)
+			singleplayer_refresh_gamebar()
+			ui.find_by_name("game_button_bar"):show()
+		else
+			menudata.worldlist:set_filtercriteria(nil)
+			local gamebar = ui.find_by_name("game_button_bar")
+			if gamebar then
+			end
+			core.set_topleft_text("")
+			mm_texture.update(new_tab,nil)
 		end
-		buttonbar:hide()
-	else
-		menudata.worldlist:set_filtercriteria(nil)
-		buttonbar:hide()
-		core.set_topleft_text("")
-		mm_texture.update(new_tab,nil)
 	end
 end