ios High Impact Tasks do not lose their date

Create a high impact task and schedule it for today (do not set time);

Open the ios app and see the HIT appear in the day;

In the web app remove the date, press save and close (the task goes to the role without date);

Sync the iOS app and the task is still in today and it will not disappear;

If you open the task in the iOS app and save, then it will have a date and the web app will get the task scheduled again.

What is going on? The iOS app is buggy, in need of a lot of love and should at least show the minimum amount of support of the original app