In minecraft:river biome inside of a desert biome, water is not updating when certain blocks are broken, leaving a block of minecraft:empty instead of minecraft:water.  Tall seagrass leaves a block of air in the untouched half when one half is broken. This is extremely broken and needs to be fixed ASAP.

UPDATE: Tried to save world to reload back into it, game froze on "Saving World", when I restarted Minecraft, the issue didn't repeat... unsure why, though