Resolve problem list worlds

builtin/mainmenu/tab_local.lua

@@ -262,14 +262,9 @@ 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")
-
-	if ( buttonbar == nil ) then
-		singleplayer_refresh_gamebar()
-		buttonbar = ui.find_by_name("game_button_bar")
-	end
-
+local on_change
+if enable_gamebar then
+	function on_change(type, old_tab, new_tab)
 		if (type == "ENTER") then
 			local game = current_game()
 
@@ -278,14 +273,19 @@ local function on_change(type, old_tab, new_tab)
 				core.set_topleft_text(game.name)
 				mm_texture.update("singleplayer",game)
 			end
-		buttonbar:hide()
+
+			singleplayer_refresh_gamebar()
+			ui.find_by_name("game_button_bar"):show()
 		else
 			menudata.worldlist:set_filtercriteria(nil)
-		buttonbar:hide()
+			local gamebar = ui.find_by_name("game_button_bar")
+			if gamebar then
+			end
 			core.set_topleft_text("")
 			mm_texture.update(new_tab,nil)
 		end
 	end
+end
 
 --------------------------------------------------------------------------------
 return {