I can confirm it cannot be longer reproduced in 1.16-pre5.
And I also discovered that this bug occurs with water in some cases, what's visible at the beggining of the video
Since I wasn't able to render this video to fit in 10 MB, I uploaded it on youtube here https://youtu.be/r0XoYxo4FEk
I can confirm this issue on 20w13a, 20w13b and 20w14a as well, despite using the latest NVIDIA drivers.
Confirmed on 20w13b
Seed is -673822520.
Another example showing the issue in 1.16-pre5. https://youtu.be/Aq4Hr0b_z30