When running your game, go to the Debugger → Misc and check what Control Node you are clicking.
Sometimes it happens that you have an empty Control node, or something fully transparent stretched over the whole window, that blocks the input.
When running your game, go to the Debugger → Misc and check what Control Node you are clicking.
Sometimes it happens that you have an empty Control node, or something fully transparent stretched over the whole window, that blocks the input.