It appears that Terraform requires workspaces to contain only lowercase letters and numbers - no uppercase letters.

Error: metadata.0.name a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')

Current behavior: the create workspace page allows me to submit a workspace named PresleysWorkspace. Creation succeeds, but workspaces always fail.

Expected behavior: the create workspace form gives me a validation error and doesn't allow me to submit until I remove uppercase letters.