This was deployed to customers directly affected by this. It'll be generally available as part of 4.05.0.

Key	T	Hotfix Notes Title	Hotfix Notes Description
EP-2098		Contracts - Error is sometimes shown when adding a new standard	We've fixed a bug where sometimes an error is shown when adding a new standard to an existing contract. This would usually be the case if the standard's schema's components are shared with another standard/schema.