I’m using Gantt view in my projects and on some of them, the dates of the task don’t match with the month/weeks vertical bar and with the “today” red bar.
Here is an exemple where everything is fine:
Today is the 9th of December, task 1 finishes today and task 2 starts today. Red bar is between the 2 tasks.
Here I add a task that goes a few months back in the past. There is now an offset, my tasks have shifted by around a week. The red bar is no longer between tasks 1 and 2:
The shift seems related to how far in the past the Gantt chart begins. If task 3 starts more recently, the shift is less important. It doesn’t seem to shift if we have task extending in the future though.