I can not program Flows in version 12.7.0

I can not program Flows in version 12.7.0. existing flows can not be edited.

[Tip] Problems with Homey?

What type of Homey and what type of user account?

What have you tried already to solve the issue?

1st, When you encounter issues after an update: first cut the power from Homey for 10 minutes

If that doesn’t change anything:
2nd, Is it solved when you open the my.homey.app web editor in a private tab?
(this forces all data to be fetched from zero)