We just ran the migration in production and everything should be back to normal for any of your admin panels! Can you confirm this solves the problem for you?
For those of you who are wondering what happened exactly, here is a small overview:
Our environment removal service had a small flow that could lead to some models being related to dropped environment. This flow seems to have existed for quite a while but we recently released a small update on one of our front-end component that blocked the access on projects related to those deleted environments.
As for why we didn’t rollback, it’s because we were almost ready to release a fix that would patch the “deep” issue instead of reverting changes that were not directly related.
Nevertheless, thanks for your feedbacks and patience!