Build the IDE using JDK 11 (or newer)
Starting with JDK 11, JavaFX is no longer part of the Oracle JDK. This breaks the current build process: As JavaFX is now modularised, it is no longer possible to create a fat JAR including the JavaFX dependencies.
However, it should still be possible to create a standalone executable of the IDE including JavaFX.
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information