The bug
The demo world greets you every 24000 ticks with an indicator of the current day. However, the new timeline feature can be used to change the duration of a day. When this is done, the messages will desync with the actual day-night cycle.
How to reproduce
Launch the game with
--demoCreate a demo world
Add the attached data pack to
Demo_World. It makes the day-night cycle 100 times faster.Join the world and wait
Expected result
A message should appear every time the sun rises
Observed result
Even as days quickly pass, only the day 1 message appears until 24000 ticks have passed
Notes
This may be undesirable to fix, since it would allow data packs to alter the duration of the demo. Alternatively, the demo length could remain fixed, allowing more or fewer days to pass. However, the translation messages mention that the demo lasts five in-game days.