oc tag command not having regexp check towards tag names cause OADP backup image fail

uk302-img-app-j:v0.6.12-build0000#000

error excuting custom action(groupResource=imagestream.image.openshift.io namespace=dbp-p0010001, name=uk302-image-app-j): rpc error: code= Unknown= Invalid destination name udistribution-s3-c9814a92-67a4-4251-bd0d-142dfc4d3c80://dbp-p0010001/uk302-image-app-j:v0.6.12-build0000#00: invalid reference format   

func copyImage(log logr.Logger, src, dest string, copyOptions *copy.Options) ([]byte, error) {
    policyContext, err := getPolicyContext()
    if err != nil {
        return []byte{}, fmt.Errorf("Error loading trust policy: %v", err)
    }
    defer policyContext.Destroy()
    srcRef, err := alltransports.ParseImageName(src)
    if err != nil {
        return []byte{}, fmt.Errorf("Invalid source name %s: %v", src, err)
    }
    destRef, err := alltransports.ParseImageName(dest)
    if err != nil {
        return []byte{}, fmt.Errorf("Invalid destination name %s: %v", dest, err)
    }

const (
    // alphaNumeric defines the alpha numeric atom, typically a
    // component of names. This only allows lower case characters and digits.
    alphaNumeric = `[a-z0-9]+`

    // separator defines the separators allowed to be embedded in name
    // components. This allow one period, one or two underscore and multiple
    // dashes. Repeated dashes and underscores are intentionally treated
    // differently. In order to support valid hostnames as name components,
    // supporting repeated dash was added. Additionally double underscore is
    // now allowed as a separator to loosen the restriction for previously
    // supported names.
    separator = `(?:[._]|__|[-]*)`

    // repository name to start with a component as defined by DomainRegexp
    // and followed by an optional port.
    domainComponent = `(?:[a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9])`

    // The string counterpart for TagRegexp.
    tag = `[\w][\w.-]{0,127}`

    // The string counterpart for DigestRegexp.
    digestPat = `[A-Za-z][A-Za-z0-9]*(?:[-_+.][A-Za-z][A-Za-z0-9]*)*[:][[:xdigit:]]{32,}`

    // The string counterpart for IdentifierRegexp.
    identifier = `([a-f0-9]{64})`

    // The string counterpart for ShortIdentifierRegexp.
    shortIdentifier = `([a-f0-9]{6,64})`

Expected results:

Customer want to know if this should be a bug that ,  when doing 
{code:java}
oc tag