When you go to this issue and click on the URL in the website tag, you go to a Google Web Cache search page instead of the displayed URL. This is both counterintuitive (misleading) and a naughty surprise for people who want to avoid Google because of privacy issues.
Current situation
website = https://www.aikidodarmstadt.de/
How it would be intuitive to me
website = https://www.aikidodarmstadt.de/ (Google Cache)