yeah I thought it was really dumb that Worf was not recognized but Sisko was.
Mr. Laser Beam wrote:

^ Yep. They changed his forehead ridge (which is a family trait in Klingons) among other parts of his face.
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No they didn't. I just looked at his ridges in apocalypse rising and compared them to a normal episode, they are completely identical.
Ridges or not, Worf's face is very easy to see, and Gowron and Changling-Martok both know him. Gowron knows him very well, and I'm sure he has
some notoriety in the Empire... at least enough to warrant a line or two in the script about the dangers of worf being recognized. Realistically the characters should be worried about that. I think the writers were counting on us forgetting or something.