sun.misc.Unsafe.arrayIndexScale(Object[].class) should return a reference size.
It was returning 1 which is now changed to 4.
This is still not fully correct, but should work well in most cases since JVM
uses compressed ordinary object pointers by default. The size of a reference
is 4 even on a 64-bit VM.
The new package is available via NuGet at https://www.nuget.org/packages/IKVM.WINDWARD/