Start flows from google routines broken

Hi there! I always used Google Routines to start favorite flows from my Sonos with google assistent.
However, since a few days it looks impossible? Did google or Homey changed something?

I can still add the flow to a routine, but once I save it Google Home automatically deletes it.
I added a little video here to show: Homey Flow in Google Routine broken - YouTube

Hope someone might be able to give some advice on how to fix this again!