Portaled out of map to trade, teammate died, portals gone

Summary
Running a map with my wife, I portaled out to do a trade, she died, all of the portals disappeared RIPing the map.

Steps to reproduce
1. Open map
2. Map owner, and one other enter
3. Map owner portal out
4. Other person dies
5. Portals are gone, map owner can no longer enter.

Expected behavior
Portals stay open, but person who died can no longer enter them.