Transportation Betrayal Didn't complete after killing Syndicate members.

Bug Report ID: #3168183641

Transporation betrayal mechanic didn't stop progressing after I killed the members that spawned in my map.

The transportation event started where the Boss spawns in the Flooded Mine Map,
Killed them both, (only two betrayal members spawned)

Event (Seemingly(?)) disappeared visually from map (seemingly as if I had completed it) but the loading bar kept progressing.
(Did best to search for it before time ran out.)

Relevant information that may or may not help;
Also running on the map:

- Essences nodes, Settlers ore nodes, jun nodes on atlas passive tree.
- Had 2 Abyss scarabs, 1 scarab adding 4 mirrored rare monsters in map device.
- Map device craft for abyss.
- Searing Exarch altars active on map device

T16, white map, no modifiers.

Altar also spawned during engaging with the event. From the mobs that were located around/near boss.