Perspective Time Control: possible "BUG"?

Hello,

I found a possible "BUG" in the TIME control in Perspective (8.1.42). When bound to a TAG (Derived in my case), it doesn't allow setting HOURS-MINUTES below the current HOURS-MINUTES.
For example: if the time is 21:10, I can only set times from 21:10 to 23:59. However, the TAGS work correctly if written directly in the TagProvider.

Connecting a memory TAG or a Custom parameter (without binding), the control works correctly.

TimeBug

If you set the MinDate to a specific value (e.g., 2000-01-01 00:00:00), everything seems to work correctly.