Potential Editing Goof?

[Yamperzzz]

Wanted to look over the announcement trailer again in closer detail since I needed references for fanart, but noticed something toward the end of the trailer where Ren is putting out the fires in the base. It seems like a second Ren (who's on fire) phases into existence from the water that pooled near the bottom of the ladder and escapes into the room below. 

 

I was initially really excited because I hadn't seen anyone else mention this anywhere and thought I somehow found evidence of multiplayer (lol) but upon closer inspection, I'm more convinced this is just unusual editing, especially since I don't see the second Ren climb down the ladder THEN into the water, and moreso when you notice the second Ren jumping into the ceiling a bit when he runs off. I also haven't noticed additional Rens. Still, thought it was interesting enough to mention!