The Bug:

Flowing water occasionally fails to render for a short period of time when spreading across chunk borders.

I've attempted to reproduce this issue on two separate systems, but have only been successful when using one of them leading me to believe that this problem could be system related. I've manually triggered a crash report and attached it to this ticket which can be found below that shows all my system's details. Just to make it clear, the system that I experienced this on has everything up-to-date. This includes java versions, game drivers, etc...

Additionally, since I feel it's worth mentioning, in my testing, this issue only appears to happen when the "Chunk Builder" setting is set to either "Threaded" or "Semi Blocking".

Steps to Reproduce:

1. Enable chunk borders by using "F3 + G".
2. Place down a bucket of water near the edge of a chunk and allow it to spread.
3. Whilst it's doing so, look at the water from different angles.
4. Take note as to whether or not flowing water occasionally fails to render for a short period of time when spreading across chunk borders.

Observed Behavior:

Flowing water occasionally fails to render.

Expected Behavior:

Flowing water would not fail to render at all.