The First Time I PLayed 1.18 And Checked Underground I Found Some Wierd Spikes On The Ground Then I Check Where Is Coming From, Its From A Water Source! When I look closly its showing all the textures of the block.

I Cant Understand How That Happened, But Ok

Also I reset all of my settings if that works, but it didnt.

Thats all!
Thank you!
Hope You Fix It