Randomly moving when attacking monsters
 

Why when attacking a monster standing next to me I will sometimes automatically go around it and attack it from another position? I'm standing next to it to begin with, after all, so why should I move at all? It's hard to plan strategy this way, when I just seem to move to a random place when attacking monsters.

It happens to me only when I try to directly attack.
Now, I move the unit first and then attack - all in the same turn.

It is entirely dependent on where YOU place the cursor. Move it all around to see the different sword angles. The only case where something funny might happen is if a unit is not under your control due to fear or leadership issues.