If a unit is build and got target of an attack-boost increasing the hp regeneration, it starts burning, even without reciving damage ...
attack-boost:
<attack-boost>
<allow-multiple-boosts value="false" />
<radius value="15" />
<target value="faction" include-self="false">
</target>
<max-hp value="10" regeneration="5" value-percent-multipler="true" />
<max-ep value="0" regeneration="0" value-percent-multipler="false" />
<sight value="0" value-percent-multipler="false" />
<attack-strenght value="0" value-percent-multipler="false" />
<attack-range value="0" value-percent-multipler="false" />
<armor value="10" value-percent-multipler="false" />
<move-speed value="0" value-percent-multipler="false" />
<production-speed value="0" value-percent-multipler="false" />
<particles value="false">
</particles>
</attack-boost>