In today's climate of multiple sexual harassment allegations, this story gained the public's interest. However, Dawber explained that filming the show was "so much fun," and she never got offended by Williams. The show's director, Howard Storm, also contributed to the case by saying that comic didn't intend to insult anyone, and "it was just Robin being Robin."
It does look like the previous co-stars separated after the show on friendly terms. Around 4 years ago, Pam Dawber starred on Robin's TV show The Crazy Ones, and they gave an interview about all the silliness which was happening on the set of Mork & Mindy back in the day.