The problem is intermittent, only to be reproduced on some mobs while others there's no problem. I believe the issue is related to the size of the hitbox of mobs rather than an issue with the scripting of charge. If it was an issue with the scripting, the problem would be identic irregardless of what your target is. Anyways, it is quite game-breaking and needs to be fixed ASAP! Other than that, LOVE this server!
TLDR: Problem is likely hitbox of some mobs being to small, not scripting of charge.