Chunky Monkey recursive solution not getting accepted

JavaScript
1

Recursive solution not able to pass even a single test case :

Code

var globalArr = [];
function chunkArrayInGroups(arr, size) {
  if(arr.length <= size) {
    return globalArr.push(arr) && globalArr;
  }
  
  
  return globalArr.push(arr.slice(0, size)) && chunkArrayInGroups(arr.slice(size), size);
}

chunkArrayInGroups(["a", "b", "c", "d"], 2);

Browser information:

Your Browser User Agent is: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.62 Safari/537.36.

Link to the challenge: