Bound range mismatch: colour both ports instead of just one
To reproduce, follow the steps there: http://download.fortiss.org/public/projects/af3/help/bound_check.html
Observe that only one port is coloured in red when there is a mistake.
Expected: both ports shall be red.
(from redmine: issue id 2880, created on 2017-03-19, closed on 2017-07-17)