There's an unneeded call to getParent because the value is already stored in the variable

diff --git a/modules/graphics/src/main/java/javafx/scene/Node.java b/modules/graphics/src/main/java/javafx/scene/Node.java
--- a/modules/graphics/src/main/java/javafx/scene/Node.java
+++ b/modules/graphics/src/main/java/javafx/scene/Node.java
@@ -7605,7 +7605,7 @@
         boolean isTreeVisible = isVisible();
         if (isTreeVisible) {
             final Parent p = getParent();
- isTreeVisible = p != null ? getParent().impl_isTreeVisible() :
+ isTreeVisible = p != null ? p.impl_isTreeVisible() :
                     clipParent != null ? clipParent.impl_isTreeVisible() :
                     getSubScene() == null || getSubScene().impl_isTreeVisible();
         }