Has AMC Theatres changed their recipe/ingredients for their popcorn "butter"?

Since I've started going to the theaters recently (about 2 or so years ago), I've been mostly an AMC loyalist, but noticed that the butter in the popcorn tends to turn my insides into waterworks (for lack of a better family-friendly way to put it). Usually only getting a little bit of the butter mitigates this effect but I still notice that things are looser. However, about 2 months ago, when I went to see Joker 2, I noticed that the butter doesn't impact my insides at all. After that I've made an effort to get slightly more butter than usual to see what the effect might be, and everything seems fine now. Has something changed in the recipe you guys use to make butter?

I go back and forth between two locations BTW so I doubt this is specific to one theater, at least.