I did some research and found the logs and dumps. Sent by email to firstname.lastname@example.org.
EDIT: I was able to log in by disabling my network connection for a while and preventing the sanctum portal from opening. Coordinates where I crashed are near my inn at -1944N 1.383E altitude 89
EDIT2: Tried my luck a bit and noticed that approaching the-moebius' house by the square opposite to my portal garden made me crash. Maybe there's something there?
EDIT3: Aaaand I'm stuck in sanctum again. Well hopefully you'll be able to fix this game breaking bug with this information.
EDIT4: Now I got something useful looking on log with lots of error messages and stacktrace. Here's a link to pastebin: https://pastebin.com/2fbraz0i