Also changing year doesn’t change when you set a new year in the dropdown list. It’ll only switch to the year after you click day or time.
Though it doesn’t matter much as no matter what the year is set to it’ll be set to 2024 when you’ve clicked ok/accept.
What date format do you have selected in your Trakt settings? Is this an issue in the Trakt website or Trakt apps?
It’s default settings.
Time Zone: (GMT+01:00) Stockholm
Date Format: Year Day Month
Time Format: 24 Hour
Week Start Day: Monday
I’ve only tried it on Chrome Win10. However I do, trakt will set it to year 2024.