1.16.200: This bug does not occur on Windows 10, and possibly other RenderDragon-enabled devices. Still affects Android, and possibly other non-RenderDragon devices.

The bug

Bubbles "facing" the player in bubble columns appear to stop animating if the player is at a sufficiently far distance from the bubble column, and while looking in the general area of the bubble column.

Steps to reproduce

1. Turn off the Fancy Bubbles option.
2. Create a bubble column (both Soul Sand/Magma Block-based columns work) surrounded by glass, that is about 15-20 blocks tall.

When you look upwards standing next to the bubble column, or go ~24 blocks away from the bubble column, what appears to the "front" bubbles stop animating while the bubbles behind continue to animate.

Note that if you are standing far away and you are looking in a direction such that the bubble column is near the edge of the screen, they appear to animate properly.

This bug may be easier to view on a PC, though it also affects other devices.

Expected results

The bubbles should either progressively stop animating as the player goes further away in a logical manner, or continue animating together for as far as the player can see them.