Don't show due dates of related issues in red if the issue is already closed

The related issues widget shows the due date of related 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 in red if the due date has been missed and the issue is still open.