Has anyone else noticed an increasing instance of mails that have an unsubscribe link, which takes you to a proper unsubscribe page but when you click on it you

Has anyone else noticed an increasing instance of mails that have an unsubscribe link, which takes you to a proper unsubscribe page but when you click on it you get an error. The joy I suspect of ignorant bug prioritisation - seen by some as no big deal where in fact it means that the organisation is violating both US and European law as well as causing brand damage (either of which would usually make a bug priority 1 in any normal organisation).