This can happen if the user registers with JavaScript disabled in their browser. Since the minimum fundraising goal validation is enforced using JavaScript, this function wouldn't work if it was disabled. This setting is not very common for most users and would need to specifically be disabled by the user intentionally, or possibly a corrupt or out of date browser. When users disable Javascript, it should be understood that many functions on the internet will have problems, not just with Sphere but many other applications as well.