Sorting is not working in Fire Fox browser

[EPM Solutions]

 Hello,

      Whenever I double clicking inside New rank column, a drop down showing values for new rank by which new rank column get sorted and New rank are coming in ascending order.
This is above my needed feature for my grid as below link I shared.

The above sorting is not working in Fire Fox Browser (but it properly working in Google Chrome and IE).
Please help me to work this feature in Fire Fox browser also.
Here is URL for file:
https://plnkr.co/edit/DH6baZRbPQ8iLsJCha6g?p=preview

[paramvir]

you could use a timeout to call sort function asynchronously in the editor change event.

Code: [Select]

setTimeout(function(){
      rank_sorter(rankIndx, rankVal, dataIndexName); 
})


[EPM Solutions]

Thank You.