Scenario:
- Select an action, e.g Scorching Ray or Lae'zel's Menacing Attack,
- Mouse over enemy to determine if positioned for attack,
- Cancel and click a different location for the creature,
- Reselect the action,
- Click to act
--> Wrong action is executed

There is a delay between the completion of one action and when the UI will let you select the next, but there is no visual feedback or indication of this delay or that the requested action was denied. In cases where there is a red-x on the mouse cursor, the cursor has cleared while the action is still going to be refused.

This can make the game feel unpredictable.

Having a visual/auditory response (e.g circuit-breaker type 'thunk') would make it much easier to track what's going on.