When I have an animation called "Default", the origin for that animation seems wrong (even though it has been set as "Bottom").
It works fine for the other two animations ("Left" and "Right") and the collision works fine too, when I delete "Default" animation.
Playing on Pale Moon 8 (stripped Firefox 8 build), developing on Construct 2 r71 (64 bit), on Windows 7 (64 bit).
Here is the capx:
Test001.capx
*edit: Originally posted as r71, but still happening with r72