If i have a large cruiser at the furthest-back row, it’s very easy to lose it off the edge:
clicking (to set orders) or double-clicking both do this:
what seems to be happening is the game gets mouse-down, selects a ship, applies snap-to-mouse (which moves it back slightly - off deployment), gets mouse-up… places the ship… which is offscreen, and so deletes it.
i’ve taken to dragging a cruiser away from the pack to do a double-click select as otherwise i’m just constantly having to reload.
this is on a slow system - the software mouse is very noticably laggy