Strange Calendar Behaviors in ZP

Strange Calendar Behaviors in ZP

I keep adding today's date at end date on task. But then the dashboard shows a different end date (off by about a day), and says the task is "delayed." I have tried hitting "clear" to remove the date errors, but the date error remains.

On similar issues, wouldn't it be faster and easier to type in a date?  Will the system allow a typed date?  Even better would be the ability to arrow the date up and down like many programs.  Or type "t" for today.