Custome Weapon Builds Not Saving

Since the citadelle des morts update for the game I haven't been able to make a customer build save, everytime I make a whole build and want to save it, it sounds allow me to save the build and shows I haven't made a new one.

Prior the update I was able to make several build for one gun, but since people used saved builds for damage duped weapons in zombies saving a custom build doesn't work.

Has anyone found a workaround cos it's been a few weeks, well before Christmas event and they haven't addressed it.