New Delhi, Aug. 30 -- The Broadway rom-com "Maybe Happy Ending" isn't in a very happy place these days. A casting controversy threatens to dampen the show's post-Tony Award-winning glow.

The strife began when producers of the South Korea-based musical chose to cast Andrew Barth Feldman as the male lead when original star Darren Criss steps away, in effect replacing an Asian actor with a white one.

That prompted denunciations by the Asian American Performers Action Coalition, the Consortium of Asian American Theaters & Artists and prominent Asian American artists such as Conrad Ricamora, Ruthie Ann Miles, Kay Sibal, Jose Llana, Kay Sibal and BD Wong, who became the first Asian actor to win a Tony in 1988 for "M. Butterfly."

The Consorti...