Steps to reproduce :

- import the Adam model from the Asset Store
- set the model to Humanoid
- select an animation and go to events and click Add Event
- browse for a script notice that all the assets are shown

Explanation :
in the model importer animation tab, the object field in the event window is used to define an object to be passed has a parameter to the function that you define not to attach a script.

The workflow is a little bit different than in Animation window, because the user is working on an asset being imported there is no component script attached to the asset so the user must type correctly the function name rather than having a list of potential function name.