After doing some modification work, I save the PCB layout and close out. Starting a new session and going back to the board I am working on, I see things moved out of position from where I left them. It happens to lines and boxes in the Top Silk layer and on objects like ungrouped pads in the Top or Bottom layers.
It doesn't happen at random and keeps happening to certain objects. A solution I've tried is deleting them and making a new one. That sometimes solves the problem.
Fix?