I have a menu scene and a game scene, and at first the menu works fine, it brings me to the game. But, when I go back to the menu scene, input doesn't work anymore. The buttons highlight when I hover over them, but nothing else works. Animations, button pressed events, sounds, signals, none of it works. What could cause this? I've tried isolating as many possibilities as I can, but it still had the problem no matter what I tried.