Wrong value used when chaining properties.

[j-hoffmann]

** Description **
I know this project was discontinued by the autor, but I still wanted to document this issue.

I have one variable which gets its value reassigned in the cascade. When chaining this variable, the new value is not assigned to another variable, rather the original value from is used.

This works fine in other browsers which don't rely on this polyfill (Chrome, Firefox, Edge).

** Version **
4.1.0

** To Reproduce **
I was able to create a MVC:
https://jsbin.com/nevihozaqe/edit?html,css,output

[deleite]

I realized the same when I tried to use this lib along with gap polyfill. Anyone knows any forks that are updated or another lib similar to this?