Hello!
We encountered an issue where “Delete” failed to delete some components in one of our (Dev only) apps (see screen recording below). Neither right-clicking and choosing delete, nor using the Delete button on the keyboard worked. It seems that the container has been deleted earlier, but that the visual representation is still there, both in create and in the app itself.
https://app.screencast.com/nV4BJ7tF8dqei
We can delete or add freely other places in the app, but this specific container seems to have lost its ID and therefore prevents all actions.