Lethal Skull damage triggering when it shouldn't

What you were expecting to happen, and what actually happened?
AI did one skull match, maybe 2. My first troop disappeared off the board.
What are the steps to make it happen again?
Probably one of those nearly impossible to replicate issues.
Do you have any screenshots or video you want to share with us so we can see the problem? Attach them to your post!
I took a SS after I lost the troop. At the most it could’ve done 30 damage to my first troop. It was the start of the match. Nothing had casted.

Despite being one troop down. I should’ve had a fair chance to win the match. But I got my butt kicked. My theory is… The AI was told to do Max difficulty. So Max it decided to pull out some tricks like to do lethal Skull damage.
The following SS was from me going into the log and doing a rematch in casual.

You can tell the AI was on “Max difficulty”. By how 3/4 troops had already recovered the burn status effect. And at least 1/4 recovered from fairy fire.