Hugo Cornu. Have you used anything that can give you free alts. Because when you download the exe, You change your authentication servers to theirs and not Mojang's. If you don't switch it back, then you will look like steve/alex mix and so will everyone else only on the client side.
This is also true because if you have the Minecraft game output on. Then by looking through the warnings, it says:
08:21:58.589
Missing sound for event: minecraft:item.bucket.empty_tadpole
08:21:58.625
Missing sound for event: minecraft:item.bucket.fill_tadpole
08:21:58.626
Missing sound for event: minecraft:music.overworld.deep_dark
08:21:58.627
Missing sound for event: minecraft:entity.tadpole.eat
08:21:58.627
Missing sound for event: minecraft:entity.tadpole.grow_up
08:21:58.628
Missing sound for event: minecraft:entity.tadpole.step
Hello gaspoweredpick. I already made a report like this linked here: MC-249620
It is nice that you also figured this out too though.
This also happens to soul sand. any block that moves you down a pixel will turn you character darker and say the client light is 0
I have added the screenshots now
Hello Avoma. Thank you for reminding me. I checked and I was using a texture pack. After trying with no packs, It just said footsteps.