Whenever you use shield bash with no cooldown and hold down the key, it misses like every other attack. You can easily watch this happen as the enemy’s health won’t go down at those times. Best way to test it is to make sure you are not doing too much damage, so you can have time to watch it happen.
The only way I can semi-use it, is to push the key each time, instead of holding it down and do it slower. Then of course I am losing DPS.
Please respond and let me know.