Please... please fix mouse targeting!

Mouse targeting is horrible.  I promise if I click on the opposite side of the screen I actually want to walk to the target point instead of attacking the Redstone Monstrosity that is sitting on top of me.  No matter where I click on the screen, it targets the large enemy nearby that I'm not clicking anywhere near.  This happens all the time.

If I attack an enemy and then click away and hold the mouse button to walk away, it also often starts to walk that direction briefly and then walks back toward the enemy to attack again, even though I'm still holding the mouse button to move, and I have to click and hold the mouse button again to actually move away.