The “Members Only: Palm Beach” cast is reflecting on a controversial comment Gale Brophy made on the show … and ain’t holding back about her general rudeness on set.

The ladies of ‘MO:PB’ — Hilary Musser, Taja Abitbol, Ro-Mina Ustayev, Rosalyn Yellin, and Maria Cozamanis — gathered together for an in-depth cast reunion hosted by Rachel Uchitel for her “Miss Understood” podcast … and at one point, brought up Brophy telling Ro-Mina should go back to her own country during one wild episode.

ICYMI … during a class with an etiquette coach, Brophy says she told Ustayev to go back to her own country if she wanted to eat with her hands, explaining that Palm Beach socialites only use their hands to eat for appetizers and finger goods.

Brophy has maintained she meant it as a teachable moment … some innocuous advice essentially — but it clearly didn’t go over that way with the cast … who she’s since accused of bullying her.

Brophy’s friend Yellin — a major reason why Brophy appeared on the show — says during the reunion she was shocked when Brophy said it … and wishes she’d more firmly corrected her pal.

Ustayev says she didn’t initially hear the comment because Brophy said it only to Yellin … but it defintely hurt her when she did. Brophy was “crazy” and “mean,” Ustayev says … and, even Yellin agrees to the latter adjective — though she does mention she thinks it may have been for the cameras.

Season 1 of “Members Only: Palm Beach” came out on December 29 … and, though Netflix hasn’t renewed the show yet, cast members have said they’d love to come back.