To reproduce, build JavaFX with JDK 24, and then:

cd apps/samples/RichTextAreaDemo
ant jar
ant run-richeditor-demo

You will see the following warnings:
     [exec] WARNING: A restricted method in java.lang.System has been called
     [exec] WARNING: java.lang.System::load has been called by com.sun.glass.utils.NativeLibLoader in module javafx.graphics (file:/C:/Users/kcr/dev/javafx/jfx-tmp/jfx/rt/apps/samples/RichTextAreaDemo/../../../build/sdk/lib/javafx.graphics.jar)
     [exec] WARNING: Use --enable-native-access=javafx.graphics to avoid a warning for callers in this module
     [exec] WARNING: Restricted methods will be blocked in a future release unless native access is enabled

...

     [exec] WARNING: A terminally deprecated method in sun.misc.Unsafe has been called
     [exec] WARNING: sun.misc.Unsafe::allocateMemory has been called by com.sun.marlin.OffHeapArray (file:/C:/Users/kcr/dev/javafx/jfx-tmp/jfx/rt/apps/samples/RichTextAreaDemo/../../../build/sdk/lib/javafx.graphics.jar)
     [exec] WARNING: Please consider reporting this to the maintainers of class com.sun.marlin.OffHeapArray
     [exec] WARNING: sun.misc.Unsafe::allocateMemory will be removed in a future release