modules/web/src/main/java/com/sun/javafx/webkit/prism/WCFontImpl.java

*** 213,218 ****
--- 213,222 ----
      }
  
      public Object getPlatformFont() {
          return font;
      }
+ 
+     @Override public float getCapHeight() {
+         return getFontStrike().getMetrics().getCapHeight();
+     }
  }