not a webcomic, but a week or two ago i got into an lgbt audiobook and was really impressed with the amount of care and research put into the different sexualities and topics handled in the book- right up until we got to the bi character. literally every bad stereotype about bi people packed into one character- cheats on her girlfriend with a man, doesnt care about practicing safe sex (and is later treated like she was swarming with std's), sex-obsessed and cheated because she wasnt having enough of it, et cetera. it was actually so jarring as a bi person how horrible this character was portrayed in comparison to the other lgbt+ characters that it felt like the author was trying to reach through the book and punch me in the face.
the author tried to remedy this in the second book i guess by revealing that one of the characters from the first book is bi which i appreciate but still... like how do you miss that bad?