Yes, I'm referring to the inclusion of slave cards in the marketplace deck alongside the gold, ivory, cloth, fish and other non-human goods. In the game, players can discard slave cards to take certain effects, and in the mind of some, this came across as players offering human sacrifices or trading in human suffering.
Before the game had even been released, DoW's Mark Kaufmann had responded to complaints about the inclusion of slave cards in the game:
Here's part of a press release from DoW's Adrien Martinot announcing the card replacement:
Still, we understood that this very precise element was preventing some people from fully enjoying Five Tribes. As a publisher, we thought it was important to offer the same joyful game experience to everyone. That is why slave cards have been replaced by fakir cards in the new reprint of the game. While the name and illustration are different, the purpose of the card in the game remain the same. We sincerely hope that you will enjoy these new fakirs, as they will be precious allies to summon powerful djinns and help your builders and assassins in completing their more or less noble tasks.
In order for everyone to have access to these new fakir cards, we worked with our friends at the BGG Store. They will be able to distribute an exclusive fakir replacement deck very soon.