I'm using the windows app.
If I drag a overdue task in the Today and Overdue overview to today it disappears.
It seems the task is postponed a year in stead. This is not a recurring task, so it looks like the app is giving the task a wrong date when I drag it around.
Unfortunately, I can't reproduce this issue. When I drag a task from Yesterday to Today, it stays there and its date changes to "today". If I drag it to the "Postpone to tomorrow" box then it disappears because it gets correctly moved to tomorrow.
Please tell me - what exact due date did this task have originally and in what language are you using our app?