I find a deserter ?

Is he a deserter, or a zombie?

 

Seems more that paladin is under panic effect by your pyromancer 

My pyromancer is not boosted, he is afraid about nothing and he lost all his life and AFTER he goes on the left ! He thinks he is a king and he wants to restore his life ?

It doesn’t matter, panic effect is an effect created by the fire damage. This means that also Firebolt Tower for example can put in panic troops. Some troops if are boosted are immune to panic effect.

Yes but on the screen he is not in fire, I find it Is after, and his position was lagging