Hi, the action graphics just show what action will be activated when you click on an enemy. you don't have to click it (in fact if I remember correctly they are just images not buttons).
You have to click on an enemy to activated the attack after you selected the necessary dice.
In my tests the crippling strike works correctly. I select the dice, the icon light up and when I click on the enemy the attack is performed.
I will check further. Do you happen to remember the room that this softlock happened?
no problem.
In the original but very basic engine (which was use in my Books of Power game) you had to click on the action after selecting the dice and then click on the enemy. Players complained that about too many clicks so in this game I made the selection of the action automatic after selecting the necessary dice which worked quite well.
I will check in any case the page/ingame help for possible text improvements. Thanks for the feedback.