Reminders still showing when ticket resolved

To list,

I sent this earlier and got no response, so sending it again but with
snapshots:
I’m on 3.8.7 and just noticed that when I select a due date for a reminder
(either entering directly or using the “calendar”) it always ends up as
30-Nov-1999.
I also noticed that when I resolve the ticket, the reminder stays open.
Has anyone else noticed this? Does anyone have a fix or have I set something
wrong?
Thanks.

The ticket status shows resolved, but the reminders remain unchanged ANd
show in the Home page.

Help anyone!??

Kenn
LBNL