src/java.base/share/classes/java/nio/Heap-X-Buffer.java.template

@@ -142,11 +142,11 @@
         return i + offset;
     }
 
 #if[byte]
     private long byteOffset(long i) {
-        return arrayBaseOffset + i + offset;
+        return (arrayBaseOffset >> 1) + i + offset;
     }
 #end[byte]
 
     public $type$ get() {
         return hb[ix(nextGetIndex())];