Lava texture is incorrectly displayed

Can confirm.

Confirmed for 16w21a.
Doesn't affect earlier versions (16w20a, 1.9.4, 1.9.3, 1.9.2 etc...)

confirmed on mine as well for 16w21, windows 10 latest release of java 64 bit

Confirmed

Uploaded two images showing a comparison between 16w20 and 16w21

How do we know it is not intended?

@unknown,

1. There is still the old texture in the files, and there is no new texture there.

2. "Bottom appears to be unaffected"

3. The issue is assigned by ProfMobius (top right)

I assume it has something to do with the texture file not being read correctly (duh) or the render, anyway would be cool if there was a way to keep it in the nether like that but turn the lava back to normal everywhere else. makes the nether look more scary.

even reopen cant fix
https://youtu.be/tlUButOwvdM