Instance crash on death

When playing a map (currently Tier 1/2), if I die and choose to respawn, the instance remains active for a short time, I'm able to walk around briefly, but then I get kicked to the login screen. After logging back in, all portals to the map are gone, and the map is marked as 'attempted' in the Atlas. This effectively deletes the map and any potential rewards, making it a frustrating and unfair experience.