The Interactive Map of Tufin SecureTrack allows to find a Path from A to B combined with a service / protocol / application.
This has the advantage that matching rules of firewalls involved are shown also.

Using earlier versions, it was very easy to select a specific service, e.g. tcp:8080
This is still stated in the (i), but when a newer version is used, the Button "Find Path" is still greyed out when some information is provided in the "Service" field.

So it seems that a search isn't possible...
Tufin has changed the use of this field, so please be sure to type "protocol:port" as needed and press <return> afterwards.
Only then the configured Service is taken by the system - and therefore only then a search in the Interactive Map is possible.