Having similar issues, but they constantantly change. Sometimes it's some textures and text get purple/green glitchy but today a lot of blocks became all the same color. This is reflected in the inventory and in the world. I was tolerant of minor texture glitches where I could still make out the block… but this is unplayable now.
[media][media]I'm also getting tons of visual glitches as well. They change over time as well. Sometimes it's the text, other times trapdoors have a weird grid texture.
(Java)
I launched the game using curse forge instead of the Minecraft launcher and no texture glitches. Might be launcher related?