Minecraft 1.21.10-rc1
Original ChangelogA hotfix release candidate with changes to bubble column mechanics.
Bubble Columns
Entities are now only pushed by bubble columns if they are moving more than 1 - 1e-5 blocks per tick, or the entity hitbox shrunk by 1e-5 in all directions intersects the bubble column block. All throwable projectiles interact with all intersecting bubble columns on their first tick regardless of these conditions.