So here's how you can realistically recreate clipping EA1/2. If you cast Enkindle, and follow it up with both EA 1 and 2, it will clip the last of those abilities outright, burn the cooldown, but net no actual damage, in addition to throwing an error. All it takes is casting Enkindle, then ruin 2/4 (or other instant GCD), then combining EA1/2 in a double weave. That's it. It's really easy to accidentally clip it. If you double weave EA1/2 followed by another double weave EA1/2, that should also cause it to break.

Before, when you tried commanding the egi to do something it couldn't do, it would error and refund the attempted cast, so a similar system will need to be put in place to prevent this.