I've noticed when somebody tips my Restaurant a random table appears with a tip on it but the tip won't collect.
I've noticed when somebody tips my Restaurant a random table appears with a tip on it but the tip won't collect.
Have you tried double clicking on it? Or clicking it multiple times?
Otherwise, it could be a bug for your game.
It seems to me that it is a glitch, it is leftover from the the last restaurant you visited, like a ghost.
I get that too maybe it's a haunted table especially for Halloween!!