30 years ago it was rather normal that a manager would touch the behind of a coworker, which is clearly a bad thing. Nowadays looking in their direction a bit too long seems to be labeled 'not done'.
Some time ago I said to a coworker who I consider as a friend : 'I enjoy your company'. Another (younger, italian) coworker told me to be careful after I said to him 'she has such a soft voice'.
I really did not expect that reaction. To my feeling, no line got crossed and the fact that we are still friends and at times even share our thoughts about love and relationships in general, proves that we trust and respect each other.
Safest thing to do is just leave no possible room for doubt. This means you can’t be friends with your coworkers, which is disappointing, but the tail risk of accidentally saying something that crosses the line is too severe when it comes to professional consequences.
It was not normal in a semse normal managers would do it and everyone would aprove.
On 1995, which is 30 years ago, it was neither normal nor accepted. You was major asshole if you did it and lawsuits were already won.