I'm using geoserver 2.14.1 with geoserver print extension.
I've both JTS vividsolutions and locationtech on WEB-INF/lib and everything is working fine.
But I don't like this solution, because we migrate the entire project to JTS@locationtech and we don't want the vividsolutions version anymore.
Mapfish-Print Pull Request:
Once the released is OK, i create a PR on Geoserver.