If the game window is not active (for example, you're replying to a comment), when you click back on the game window it can select multiple actions simultaneously. Such as, choosing to go Outside and also initiate a conversation with Summer, who happens to be standing behind the travel button you're clicking.
This breaks the game.
If you Never mind out of the conversation, you're taken back inside, but the Map no longer functions. You cannot travel until you exit the game and relaunch.