Great game so far and and see its potential. but some issues I have found were:
crouching makes me feel nauseous; water z-fights with the block beneath it; if you jump into a block above you, your camera phases though a bit; lack of friction makes movement feel not very smooth; slabs placement can be a bit confusing as well as slabs placement collision is the size of a full block;
Lastly just a few features that are probably planned, unique block placement and break sounds, visualization of what you are currently holding, better UI and Hud, water physics (and waterlogging) and doors.
I am grateful to be giving feedback and being part of early development of the game, can't wait to see what it'll be like later in development!