Upgrading to liquid-fire 0.27.1 breaks velocity

My app works fine with liquid-fire 0.26.x and ember-cli 2.11.x, when I upgrade to the latest cli version, 2.12.0, liquid-fire 0.26.x throws errors. The errors are removed when I upgrade liquid-fire to it's latest release, 0.27.1.

However, although the app loads, the app is broken as my velocity animations no longer work and I receive the following error in my browser console:

Velocity: First argument (transition.slideLeftIn) was not a property map, a known action, or a registered redirect. Aborting.

Any thoughts as to why this is happening?