Twisted Treeline turrets.

I'd like to report a bug about TT towers. The armor on them is broken. I'll try to explain what happened. so.. there is an item on every tower,that adds bonus 200 armor and MR,when there is no minions,right? and when the minions approach,turrets armor is reduced to something around 70-80,as I remember. the problem is that towers initial armor is already calculated as a lowered one [70-80 when minions approach], sadly, there is no minions at all and this armor is active,but the funny thing is that,when minions are nearby,towers armor is only 2. This is really annoying for me as a 3v3 ranked player,because I found that people are abusing this bug pretty often and also leaving the lane means 1 lost tower if not 2. :( Would be nice to have this fixed ASAP. Thanks for reading Shadowier.