Confirmed as of 1.21.2-RC1.
In fact, if you time submerging underwater as the animation plays and reverses, it is possible to catch the animation on a frame where a bubble is missing in the graphic.
Confirmed as of 1.16.3
Confirmed as of 1.21.2-RC1.
In fact, if you time submerging underwater as the animation plays and reverses, it is possible to catch the animation on a frame where a bubble is missing in the graphic.