Blue Salt

It happened to me too,

And i think it only happens to blocks with 3d model or alpha textured blocks.

I was updating my Minecraft and the blocks are just like that. Initially, it was only grass and flowers, but the next update, it also happens to anvil, torch, lantern, and even leaves, and they're more transparent than before.

There's a way to make leaves visible again, by changing the graphic from fancy to simple, but somehow it makes the game laggier even though it's supposed to be the opposite, or maybe it's because other blocks are glitching.

A similar bug happened in 1.19 where horses’s texture became static-like with random color.

Yeah, it also happened to me, i was updating my Minecraft and every flowers and grass looks weird, today there's another update, but now it's worse, I can't even see leaves