Prism tower targeting problem

Prism passive aquire uses the normal laser while retaliation uses prism forwarding.

i've gone through how to write this issue a thousand time now,and it's not good so reject it from the beggining ok?

ok,have an enemy prism tower on a cliff(at the edge),a seige chopper deploy on a 1 cell away from the range of the prism tower
(don't forget about the extra cliff range bonus)
now order the seige chopper to attack the prism tower,the prism tower uses prism forwarding to retaliate!!(although it didn't use it to passive aquire when it could!!)

the bug here is that the cliff range extra
(a unit on a cliff get's this)
which is not enough for the normal
prism tower laser to attack -(by passive aquire)-
a unit that is not in the normal laser range,while retaliating causes the prism tower to use prism forwarding
why not use prism forwarding's range from the start?
(i mean to attack even before being hit - before reataliation?)

i'll explain how the bug occured (i tried it many times now am sure it's a bug)
train some seige choppers and order them to deploy on the outskirt of the range of a prism tower that is directly next to a cliff(on the upper side..confusing huh?)
the prism tower's won't attack,now order the seige chopper to attack the prism tower,if there was a nearby prism tower then the towers will use prism forwarding to retaliate.