Is it intentional that the new charms cannot be experimented on after the latest patch? I dont recall seeing anything in the notes. Given that they are master-crafted i would assume they should still fall under experimentation.
not all mastercrafted items can be experimented on. Do /bug it though, if the item is not flagged "cannot be experimented" then it might be a bug, if it has the actual text that it can't be experimented, then put in a /feedback and /bug explaining why it should be or that you think they mislabeled it "no experiment"
2 days ago they were able to be experimented on and the next day they cannot. So the patch must have contained something in relation to these particular charms.