TOTP engine has no UI?

If I enable totp engine on my instance (v1.7.0), it functions just fine with vault write and vault read totp/code/name – but there is no UI browse?

Is the browse UI (i.e. what you get with kv-v2 engine) not implemented with totp? or is this something I’ve done incorrectly in my policy configuration?

It’s seeming like this might be the case based on another response, but haven’t checked source code yet: GCP Secrets Engine Grayed out in Vault UI