Game tend to disconnect/kick from server when you are staying in the new dungeons for extended periods of time after reviving. If you die and revive, your toon goes invisible and you are disconnected from the server (although game doesn't tell you that). Restarting the game and logging back in appear to fix the problem.
EDIT: Sorry, this is in the wrong section. This is happening on the Live Server. Should be in bugs report.
Edited by Furcula on March 5, 2018 5:59AM