I think it’s far more likely that he either has a bacta soak regularly without the prosthetics or that he’s been injured recently at the start of the film. Vader’s origins really have nothing to do with Rogue One’s story, so I can’t imagine why there would be a flashback to that. I’d believe it for VIII, though. There’s no way this model is from the other movie, right?
There was a Rumor that they planned to show Vader as more Clunky like he is in Star Wars and later on in Empire strikes back he is much more athletic.
But why would you still be clunky 20 years later and then in 4 years you go from clunky to jumping about. 😃
It’s honestly anybody’s guess at the moment. Could be Vader get’s hurt in the middle of Rogue One and he’s out of action perhaps for a bit of the film and comes back extremely pissed!!!
Don’t forget the Vader Stuntman alternate actor…
https://www.youtube.com/watch?v=RcEUrA9Ix2g
The thing that makes me most question the Bacta Tank is there are no Medical droids present but perhaps they are in a room up above. It’s not at all obvious. If it is a Bacta tank and there are no Medical droids then it’s a goof up.
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