intention action Iconable not called in version 2017

I am trying to add a custom icon to an intention action.

I have implemented Iconable and it works fine on intellij ultimate 2016.3.7. My issue is that it doesn't work on 2017 versions.

Specifically the getIcon method of Iconable is not invoked. My general observation is that implemented Interfaces aren't doing anything as HighPriorityAction has no effect too.

Things I have tried

- Uninstalled 2017 and reinstalled the latest version from scratch

- Changing the project structure to use different SDK's.

- Replicated this behavior on linux and windows from clean installs.

Any ideas of what else I can try?

Thanks