I was running through some SoD instanced missions in Temp of Bertox and AFTER I completed the tasks( so I did get credit) I would drop the task and immediately afterwards I couldn't click or use AA/spell/campfire to get out; eventually being kicked to character select. This happened in 1. A Corrupted Arch Priest ( I just thought it was lag or a crash) 2. Remove the Head and the Disease will Die ( happened again) 3. The Bubonians are Coming ( repeated intentionally to confirm and it happened again)
This is a day 1 bug with instances of that zone reported and never fixed back then. Not trying to dismiss the report. Just adding as info in case devs try looking at the change logs to figure out when it started.
You have to hail Apothecary Cadmael to complete these tasks. Ride the elevator and it zones you and you don't even have to run to him.