I just released mapjfx versions 1.20.1 and 2.1.1, they will be available in maven central:
<dependency> <groupId>com.sothawo</groupId> <artifactId>mapjfx</artifactId> <version>1.20.1</version> </dependency>
<dependency> <groupId>com.sothawo</groupId> <artifactId>mapjfx</artifactId> <version>2.1.1</version> </dependency>
mapjfx now uses OpenLayers version 5.3.0.
Version 1.20.1 is built using OracleJDK8, whereas version 2.1.1 is built with OpenJDK11.