Lava don't flowing

Did the lava flow all the way down as you approached it?

The lavafall was already in the place when I was walking in the point of which I took the screenshots; it didn't started flowing from the beginning, the lava source block. I didn't approached more to see if the flux would be fixed due to the existence of the lava sea.

From what it looks like... The lava flow is continuing...

Dean, look that one of the falls doesn't falls the entire way.

If you look at it close enough you can see that there is lava but due to a light bug you can't see it well.

When I look close I see an empty space...

I agree, there is nothing wrong with any of the lava flows in the screenshots. There is a lighting bug at the top of the lava stream in the first three screenshots which makes the lava hard to see (since it is dark).

Considering all the work that's currently being done on the lighting engine, I think this bug should maybe be closed...

Kevin, I reported that bug on lighting too, but the first three screenshots are showing the problem in the background. I was not showing the flow in forefront.

Yes, the lava in the background is the same. It is there, but very dark. If you still can't see it I'll upload a photoshopped version...

Please, do that.

Added the enhanced image to show that all lava streams are present and correct. The lighting bug made the right-most stream hard to see because it was too dark.

I added an editted version of your editted image to show you which lava flow I was referring to. It was not the righmost.

Ah, almost commented about that one earlier. But here goes:
Look more carefully where that "bad" lava fall starts and where the rightmost lava fall goes at the same level (their relative positions). Compare those positions where they are at the bottom. The same relative positions. Meaning they hit the bottom at the same level.

Also, compare the cross-section of that "bad" lava fall to the shape of its supposed shadow. They are different. The darker area that seems to be under that lava fall is actually closer to the player, and it is just so nicely at the same direction that it creates an illusion of being below the "bad" lava fall.

Let me attach an example screenshot showing an extreme case of these lighting bugs... There, 'nether-lighting-bugs.png'. Similar things, just larger, and no (un)suitable lava falls to mislead the poor human visual system.

Edit: while moving around that area, most of those glitches disappeared slowly, just like lighting glitches in the overworld.

So I guess my case stands. There is no lava bug here, only lighting bugs which are already being addressed.

This is really possible...

Resolving as optical illusion.