ref types and the align pragma

[khaledh-nim]

I'm not sure why the first two cases aren't aligned:
    
    
    type
      MyArr = ref array[4, int]
      MyObj = ref object
      MyArrObj = ref object
        arr {.align(256).}: array[4, int]
      
      var arr {.align(256).}: MyArr
      var obj {.align(256).}: MyObj
      var arrObj: MyArrObj
      
      arr = new MyArr         # not aligned
      obj = new MyObj         # not aligned
      arrObj = new MyArrObj   # arrObj.arr is aligned
    
    
    Run

Why aren't the ref types not aligned as expected? Only the field `arr` in the 
third type is aligned. It's a workaround I'm using, but it's forcing me to 
define a field that I don't need. My use case is the first type, i.e. the ref 
array, so I'm forced to do `arrObj.arr[i]` instead of just `arrObj[i]`.