Hello Kel,
I found a bug the other night during play. I was able to recreate it with only "Strain and Injury HP Variant Rules, dated at 22 March 2025" loaded as the only extension. I did an update just before testing.
On a crit, when rolling against a creature using "FORTIF: xx critical;", the number rolled to overcome the FORT is being applied to the ATTACKER as injury damage. No damage is being done to the original target of the attack. See Screen Shot.
You'll see the attacker rolled 59 to overcome the FORT, but then the 59 was applied to the attacker, with the target taking no damage, instead of the original 27 points.
On a funny note, we noticed it in a low-level campaign. The other players weren't paying attention and thought the monster somehow dished out 89 points of damage, instantly killing the player since he had only 23 hit points. Before I explained to them what happened, I told them the monster must have had some type of powerful defensive magic and suggested the player start rolling up a new character. :)
Attachment 63952
Thanks for looking into that! Rob