Hi,
I just went to the Sandswept Ruins (southwest island of the world map) and entered the room with the altar that's sourrounded by flames. Because I'm wearing Rekvu's Scorched Cloak plus an injury (which turns all burn damage into healing and makes you basically immune) I thought I'd try and just step on the flames. I injured although I received 0 damage.
I suspect that all traps will show that behaviour: causing injuries even though they can't deal any damage?