Witness node always rescans on startup, and crashes without internet connection

[speedy]

The witness node really frustrates me. I was sitting on a train without an internet connection but with the full blockchain saved on my laptop, trying to experiment writing some python scripts.

-Everytime I start the witness node it insists on doing a full rescan, which takes 10 minutes.
-When it does finish rescanning, I cant connect to any seed nodes because Im offline, so it then crashes which means I have to restart and rescan again.