Description

When our project upgraded to jQuery3.2.1 (from 2.2.4), we found a memory leak about Deferred in jQuery3.x . the promise.then method does not release the handler & handler Closure .
it work well in jQuery2.x and native Promise in chrome .

look at the following case：

Link to test case

http://plnkr.co/edit/DpMkLV2mqzwlX4Ruuk7i