Coke-Cola Chemical After Taste

Has Coke changed their recipe once again. The taste of "Coke-Cola Original Taste Less Sugar" has changed since they first introduced it to consumers because of Government's sugar regulation. During the past few months of purchases from various stores I have notice the same almost chemical after taste when comsumer. This taste lingers on. At first I thought it was just me, but after speaking to many family and friends they also experienced the same. Coke-Cola has lost my support. Same for such a once loved brand and yet another company that cutting quatily for profit.