workaround for back button overlapping (#441)

data/cdata/ui_scripts/server_list/lobby.lua

@@ -81,6 +81,15 @@ function menu_xboxlive(f16_arg0)
         end
     end)
 
+    menu:AddHelp({
+        name = "add_button_helper_text",
+        button_ref = "",
+        helper_text = "                                                                                                ",
+        side = "left",
+        priority = -9000,
+        clickable = false
+    })
+
     return menu
 end