Water flowing texture error.
This issue occurs in:
When the blocks is in the water.
When water flows into other water.
Also affect the lava.
Environment
OS : Windows 10 64-bit
Java 8 version : 1.8.0_151-b12 64-bit
CPU : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz
GPU : NVIDIA GeForce GTX 650
Drivers : GeForce 388.13
This issue has been fixed in 17w50a.