I suggest replaying the tutorial stage might help.
To move units in battle, click Squad Portrait (active : blue flame) then click the target position (floor area) , another way is to click <<- or ->>; icon bellow hero skills.
What you can control is squad unit destination position, they will move in groups.
The units can also aggro. This will need repeated commands to interrupt.
worst game ever, most worst experience ever had,
everyone don't waste time on this trash,
this trash game staffs will roll back your progress and say that's an update
 "IDLE Royal Fortress"){kind=icon}
 "Minimal Dungeon RPG"){kind=icon}
 "Paper Knight Wars"){kind=icon}
 "Incremancer"){kind=icon}
 "Diebrary"){kind=icon}
 "Bit Heroes"){kind=icon}
 "Mighty Party"){kind=icon}
Greetings! What bug did you find? Could you give a description? We will be very grateful for a reply.