"Killing" a Guadrian leaves the attacker with negative XP

[Discontinuum]

If an enemy "kills" a Guardian (and the Guardian revives), the enemy has reduced xp, if it had 0 xp, so -6 xp it has.

AtS-3-Destiny — Part 2 Turn 4NegativeXP.gz

[irydacea]

This seems to actually be a weird interaction between the Abscond and Guardian of Darkness abilities.