Gameplay-Breaking Bug

There is a combat-breaking bug involving the lock-on mechanic that affects a number of popular abilities such as ice blast, rain of decay, meteor, corrupting ground and others (Seems to be linked to AOE abilities). If you use the lock-on mechanic on a target, switch to a new target, and then use one of the abilities previously mentioned, then instead of attacking your current target that you are locked onto, you will use the ability on the last target you switched from instead of your current target.

Sometimes if your previous target has already died, then you will end up using your ability on the location where they died, but no current enemy is located, wasting mana and your cooldown.

It has a great negative impact on combat and I wanted to know if it was possible for this to be patched?