Ember.handlebars boundIf didn't call calculated property

I try to migrate project form Ember cli 0.1.2 to 0.1.15. Current problem is next:

I have can-helper. It works fine at older ember but at newer version all can-blocks are absent. Can-helper use calculated property in model, so i try to set debugger into calculation function - it work on 0.1.2 and didn't work at 0.1.15

Original ember - 1.7.0-beta.1 Try migrate to ember - 1.9.1

As i found implementation of boundIf helper was changed. Have anybody some ideas / experience with such trouble?