Calendar time changes when relogging after using pressure plates

If you set the calendar to a certain time and relog, some time will be skipped (visually, means the outer ring skips about one or two rounds and the others accordingly. Not sure if it actually changes the time to the next aporkalypse)

I was able to recreate it in a new world, also happens when you save outside of the ancient ruin and go back to check the time. It only happens if you change the calendar before saving. loading a save and relogging doesn’t change the position of the rings

I set it to this:

After saving and reloading: