Same question. 

Hey All, thanks for reaching out and apologies for the delayed reply! 

I asked our Glass team, and our code for the effect cannot handle this correctly yet. Basically, the refraction of light would need to be different in every corner to allow for this.

Our team is working on it though! I’ve updated this topic into a feature request, so they can gauge overall interest from the community and prioritize. 

​@djv is there a status update on this? 🤞🏻