Did you spot this major problem with Darth Vader's lightsaber in Return of the Jedi?

You know the bit: instead of giving a helping anthropomorphic hand to the Ewoks, Luke flees Endor to resolve some daddy issues with Darth Vader aboard the Death Star Mark II (you know, the one with the massive design flaw that destroyed the Mark I). However, Vader’s not too keen on a catch-up and tries to strike down his son, even lobbing his lightsaber at Luke. Terrible parenting.

But there’s something extremely wrong about Vadey’s lightsaber during this scene. Focus you mind and see if you can spot it around the 46-second mark.

https://www.youtube.com/watch?v=YZ_j3s5xj8I

Got it yet? Yes, as spotted by Imgur user gfoster18, the blade is coming out of the wrong end.

Instead of emerging from the blade emitter, Vader’s red krystal beams through the weapon’s high-output diatium power cell. In other words, the lightsaber is completely upside down.

Was it an almighty force trick pulled by Darth to strike down the Galxay’s last Jedi? Did Vader bend the laws of physics using his almighty midichlorian count? Or did some padawan in special effects really drop the ball?

Make your own judgement, you must.