You can not switch spells by clicking on a different one; you have to cancel first.
This behaviur buged me a lot too.
Natural behaviur:
Mouse over a spell
Click the spell
Mouse over another spell
Realize that the second one suits better
Click on the second one
--------------------
Fail - it casts
Recomended behaviur:
Once my mouse hover the quick bar, the spell/skill should ALWAYS be selected by Left Mouse Button. Dosnt matter if something is selected or not.
Your Suggested operation like :
click to select - press Esc to deselect - click another button to select --- >sounds like from 80's.
Raze > Would you be so kind and manage to fix controls (in EEdtion) to modern smart style.
Thank you.