After loading a quicksave at certain point, lander and rover missions get stuck. For example, in this case (https://ibb.co/b2J2pyk) I landed but the game got stuck at "Coast to approach the surface" stage and doesn't register that I landed. I had this problem with the rover as well, if I quicksave after landing but before collecting the samples and then load the quicksave, the mission gets stuck and no longer tracks distance to samples.