This weekend we entered an average-looking restaurant at Naschmarkt/Secession. The bill came handwritten on a piece of paper and was 38 euro ,with "suggested tip 10%" making it 41.8. We gave 40 and waited in vain for our change.

When asked for the change, the waitress asked if we wanted to leave a tip. We said no as the teas were already padded up substantially to the Champs-Élysées level of almost 5 eur per small teapot. She then gave us our change and said "I will give you 50 cents extra to give to the next waiter as tipping is customary in Austria".

I was not aware tipping is required in Austria. Has there been some societal change that I have missed? If the stuff from "Waiter Rant" is moving to Europe that would be quite unfortunate.