The pom.xml file generated when a project type of Maven JavaFX is still referring to the Java 1.7 JavaFX external jar. Come Java 11 there will need to be a dependency for OpenJFX but considering that JavaFX is included in 8, 9 and 10, the generated pom.xml needs to be updated. I instruct me students to never use this choice but to use plan Maven Java Application for JavaFX applications.
Ken Fogel PS: Its summer vacation for college teachers so I can turn my attention to annoying everyone, I mean contributing, on this mailing list 😉
