JDK-8156963 added the @Deprecated annotation to the HostServices.getWebContext method. We also need to add (since = "9", forRemoval=true) to the annotation, but cannot do so until we move to a newer version of JDK 9 that supports the "since" and "forRemoval" properties on the annotation.

Once we do upgrade to a newer compiler, the fix will be:

diff --git a/modules/graphics/src/main/java/javafx/application/HostServices.java
 b/modules/graphics/src/main/java/javafx/application/HostServices.java
--- a/modules/graphics/src/main/java/javafx/application/HostServices.java
+++ b/modules/graphics/src/main/java/javafx/application/HostServices.java
@@ -154,7 +154,7 @@
      * @deprecated This method is deprecated as of JDK 9 because the
      * {@link java.applet.Applet Applet} API is deprecated.
      */
- @Deprecated // FIXME: (since = "9")
+ @Deprecated(since="9", forRemoval=true)
     public final JSObject getWebContext() {
         return delegate.getWebContext();
     }