Steel Peak, not being accepted during enemy casting
To be more specific, if I were to use this skill at the same moment or right before a cast based skill is being done by an enemy, my stun is used up, but it doesn't stun the enemy in the process. This has happened at least twice or more so far, and I'm confident that it's a bug/issue with the skills being overwritten by action.
I can't really offer more information than this. It's a brief instant of a move, so it's nothing I can take a picture of, and the off chance of doing this on purpose for a video recording feels to be harder done than said. None the less, it is still an issue when dealing with an enemy that can cast heavy hits, and your only method of stopping them, being overwritten by the enemy's action.