Don't show due dates in red if issue is closed
The related issues widget (and in issue boards) shows the due date of issues and turns to a red date if the due date is in the past. A perfect feature, but unfortunately the due date keeps being displayed in red even if the related issue is closed - creating the false impression that a due date has been missed.

### Proposal
Only show due dates in **related issues and issue boards** in red if the due date has been missed and the issue is still open.
issue