Ember.js ember-model leak issue?

Ember.js ember-model leak issue?

While working on a simple gallery app I realized that my ember app is
slowly eating up memory.
I created a very simple app to demonstrate the issue: index.html app.js
test.js.
Test setup:
Test 1 enters a route and then returns back: Link to Test 1
Test 2 repeats Test 1 100 times. Link to Test 2
From what I can see via Chrome->Profile->Snapshot Test 2 consumes
significantly more memory then Test 1.
Can somebody help me understand what's causing that issue?