I see (look at my name) that names with no printable characters are allowed in Bitbucket and JIRA (and probably also in other products). In some cases (eg. in JIRA dashboard) textual links with full name cannot be clicked since the have 0 length.
Is it intended simplification or a bug (names should have at least 1 printable character or there should be a fallback to username or something else which cannot have 0-length)?