Due to recent time-traveling mishaps, the time machine has developed some mechanical malfunctions. These malfunctions include:
The time-space continuum has developed a nasty case of Time-Space Regurgitation, where time travelers are spat out into the past with no memory of their previous adventures.
The time machine's Cosmic Clockwork has started ticking at an irregular rate, causing time travelers to arrive at their destination with an unexpected amount of extra years.
The Time Traveler Tangles system has become jammed, causing travelers to get stuck in infinite loops of their own timeline.