The new text for a headshot firing is:
12/11/18 12:42:40 PM You shoot Combat Dummy Beza for 1302691 points of damage. (Critical Headshot)
This trigger does not work:
^You shoot {S1} for {S2} points of damage. (Critical Headshot)
This one does, but does not capture target or damage amount:
(Critical Headshot)
This also does not work:
^You shoot {S} (Critical Headshot)
I'm guessing it has to do with the parenthesis before and after the Critical Headshot.
This is certainly not a critical issue. I only use the trigger to get a count on HS per min and for the general amusement that I get from watching it fire, but there may be some other abilities of greater interest that are also affected.