Undead newborn of light in arena fight

[Grim]

Ok, this time was quite weird.
The enemy's warrior bomber boy hitted me and marked my carachters, my warrior newborn of light was low on life and the following turn died because of the healing of my sentinel golden son (because yeeah, marks trigger even with the healing from a perfect hits and is bloody annoying). However in the same turn not only I could use the toon from the afterlife to attack (it was clearly invisible and there were no white circle under its spot) but it also counterattacked leading the team to victory...awesome!

[Askora]

That sounds like the same thing I've had happen in pve. Only it was my gre killed by the healing. I'd have the circle but no sign of Eddie. So, I'd use his fury to revive the rest of the team and finish the level. I reported it (a month ago, or more). Sounds like the bug is alive and well.