Why has tasks no time for expected start and end dates anymore?

Is there a reason why the expected start date and expected end date in tasks have no time anymore from v14 on?

The fields are changed from Datetime to Date in v14. All tasks now appear in the Calendar as 00:00/12 AM to 02:00/2 AM. They are making it impossible to do decent planning.

exp_start_date and exp_end_date are system fields and cannot be customized/changed.

We used the tasks to plan our activities on a daily base, several tasks on the same date and now they all appear next to each other in the Calendar. Now Erpnext became useless for planning.

Does anyone have an idea why this has changed and how to solve this?