GUI hangs during a session, threads in the gdb stacktrace.
This is what happened before the gui hung.
1. Using dt for roughly 30 min. Importing and editing several files
2. I left the machine for several hours.
3. Continued the session with executing a lua script that groups several images.
4. Ungrouped several of the groups created by the lua script.
I have attached the stack trace. It contains 187 threads.
DT does not use any cpu. It must be a deadlock.