Visible crew/equipment: At the start, during the briefing in the wardroom, everyone walks over to the table. And just as Sisko finishes saying, "The Seventh Fleet will be engaging the enemy in the morning," a white tape mark becomes visible on the floor at the actor's feet. (00:00:20)
In the Pale Moonlight - S6-E19
Visible crew/equipment: After Jadzia plays devil's advocate with Sisko, he tells her she would've made a decent Romulan. Then, when Sisko passes the camera as he walks around his desk, the blue T-mark is visible on the floor behind Jadzia. (00:06:10)
Resurrection - S6-E8
Visible crew/equipment: When Bareil enters his quarters and finds Intendant Kira dressed like Major Kira, just as Intendant Kira walks towards Bareil, in the mirror we can see the reflection of a crew member wearing a white shirt and shorts. (00:36:55)
Visible crew/equipment: When everyone returns to DS9, Worf and Jadzia reunite and kiss. Then, in the next shot, just as O'Brien calls out to Quark, there's a visible T-mark on the floor. (00:42:15)
Chosen answer: No. He's given his name, that's all. Nothing there that might lead to a paradox. If he's gone into detail about his time travelling, that might cause an issue or two, but simply stating his name does nothing.
Tailkinker ★