I had a rather large (1.3mil in the catalogue) ship go missing on me since this morning. I'm the only person in my faction and it was docked.
This has happened to me once before with a much smaller ship, too.
Going to stick a suggestion in here also: faction core modules should come with GPS, so when you tag a ship with your faction it shows up in the faction list with coordinates. This is a neat feature anyway, but would help confirm whether or not the ship is disappearing or if there's a problem with the docking system that allows ships to be taken.
This has happened to me once before with a much smaller ship, too.
Going to stick a suggestion in here also: faction core modules should come with GPS, so when you tag a ship with your faction it shows up in the faction list with coordinates. This is a neat feature anyway, but would help confirm whether or not the ship is disappearing or if there's a problem with the docking system that allows ships to be taken.