I'm not sure if it comes from there but after putting skins in the obelisk I loaded on another map and several of my mods were not loaded (including Roleplay Apparel). I was able to use the backup and check that all my mods were installed this time but still I now have 25 slots used in the obelisk by invisible objects... Also around 500 organic polymers have disappeared (and maybe other things I don't remember...)